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path: root/drivers/scsi/dpt_i2o.c
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2015-02-02scsi: replace seq_printf with seq_putsRasmus Villemoes
Using seq_printf to print a simple string is a lot more expensive than it needs to be, since seq_puts exists. Replace seq_printf with seq_puts when possible. Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Reviewed-by: Finn Thain <fthain@telegraphics.com.au> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-11-24scsi: drop reason argument from ->change_queue_depthChristoph Hellwig
Drop the now unused reason argument from the ->change_queue_depth method. Also add a return value to scsi_adjust_queue_depth, and rename it to scsi_change_queue_depth now that it can be used as the default ->change_queue_depth implementation. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Reviewed-by: Hannes Reinecke <hare@suse.de>
2014-11-12scsi: don't set tagging state from scsi_adjust_queue_depthChristoph Hellwig
Remove the tagged argument from scsi_adjust_queue_depth, and just let it handle the queue depth. For most drivers those two are fairly separate, given that most modern drivers don't care about the SCSI "tagged" status of a command at all, and many old drivers allow queuing of multiple untagged commands in the driver. Instead we start out with the ->simple_tags flag set before calling ->slave_configure, which is how all drivers actually looking at ->simple_tags except for one worke anyway. The one other case looks broken, but I've kept the behavior as-is for now. Except for that we only change ->simple_tags from the ->change_queue_type, and when rejecting a tag message in a single driver, so keeping this churn out of scsi_adjust_queue_depth is a clear win. Now that the usage of scsi_adjust_queue_depth is more obvious we can also remove all the trivial instances in ->slave_alloc or ->slave_configure that just set it to the cmd_per_lun default. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Reviewed-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
2014-09-15scsi: add use_cmd_list flagKashyap.Desai@avagotech.com
Add a use_cmd_list flag in struct Scsi_Host to request keeping track of all outstanding commands per device. Default behaviour is not to keep track of cmd_list per sdev, as this may introduce lock contention. (overhead is more on multi-node NUMA.), and only enable it on the two drivers that need it. Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-07-17scsi: use 64-bit LUNsHannes Reinecke
The SCSI standard defines 64-bit values for LUNs, and large arrays employing large or hierarchical LUN numbers become more and more common. So update the linux SCSI stack to use 64-bit LUN numbers. Signed-off-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Christoph Hellwig <hch@infradead.org> Reviewed-by: Ewan Milne <emilne@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2013-10-25[SCSI] dpt_i2o: return SCSI_MLQUEUE_HOST_BUSY when in resetHannes Reinecke
When the HBA is in reset we should be returning 'busy' and not rely on the obscure 'last_reset' feature. [jejb: checkpatch fixes] Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-10-25[SCSI] dpt_i2o: Remove DPTI_STATE_IOCTLHannes Reinecke
scsi_block_host/scsi_unlock_host provides the required functionality. [jejb: checkpatch fixes] Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-04-09dpt_i2o: switch to ->show_info()Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-22new helper: file_inode(file)Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-05-01[SCSI] remove cmd->serial_number litterChristoph Hellwig
Stop using cmd->serial_number in printks. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-11-16SCSI host lock push-downJeff Garzik
Move the mid-layer's ->queuecommand() invocation from being locked with the host lock to being unlocked to facilitate speeding up the critical path for drivers who don't need this lock taken anyway. The patch below presents a simple SCSI host lock push-down as an equivalent transformation. No locking or other behavior should change with this patch. All existing bugs and locking orders are preserved. Additionally, add one parameter to queuecommand, struct Scsi_Host * and remove one parameter from queuecommand, void (*done)(struct scsi_cmnd *) Scsi_Host* is a convenient pointer that most host drivers need anyway, and 'done' is redundant to struct scsi_cmnd->scsi_done. Minimal code disturbance was attempted with this change. Most drivers needed only two one-line modifications for their host lock push-down. Signed-off-by: Jeff Garzik <jgarzik@redhat.com> Acked-by: James Bottomley <James.Bottomley@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-10-22Merge branch 'llseek' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bklLinus Torvalds
* 'llseek' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl: vfs: make no_llseek the default vfs: don't use BKL in default_llseek llseek: automatically add .llseek fop libfs: use generic_file_llseek for simple_attr mac80211: disallow seeks in minstrel debug code lirc: make chardev nonseekable viotape: use noop_llseek raw: use explicit llseek file operations ibmasmfs: use generic_file_llseek spufs: use llseek in all file operations arm/omap: use generic_file_llseek in iommu_debug lkdtm: use generic_file_llseek in debugfs net/wireless: use generic_file_llseek in debugfs drm: use noop_llseek
2010-10-15llseek: automatically add .llseek fopArnd Bergmann
All file_operations should get a .llseek operation so we can make nonseekable_open the default for future file operations without a .llseek pointer. The three cases that we can automatically detect are no_llseek, seq_lseek and default_llseek. For cases where we can we can automatically prove that the file offset is always ignored, we use noop_llseek, which maintains the current behavior of not returning an error from a seek. New drivers should normally not use noop_llseek but instead use no_llseek and call nonseekable_open at open time. Existing drivers can be converted to do the same when the maintainer knows for certain that no user code relies on calling seek on the device file. The generated code is often incorrectly indented and right now contains comments that clarify for each added line why a specific variant was chosen. In the version that gets submitted upstream, the comments will be gone and I will manually fix the indentation, because there does not seem to be a way to do that using coccinelle. Some amount of new code is currently sitting in linux-next that should get the same modifications, which I will do at the end of the merge window. Many thanks to Julia Lawall for helping me learn to write a semantic patch that does all this. ===== begin semantic patch ===== // This adds an llseek= method to all file operations, // as a preparation for making no_llseek the default. // // The rules are // - use no_llseek explicitly if we do nonseekable_open // - use seq_lseek for sequential files // - use default_llseek if we know we access f_pos // - use noop_llseek if we know we don't access f_pos, // but we still want to allow users to call lseek // @ open1 exists @ identifier nested_open; @@ nested_open(...) { <+... nonseekable_open(...) ...+> } @ open exists@ identifier open_f; identifier i, f; identifier open1.nested_open; @@ int open_f(struct inode *i, struct file *f) { <+... ( nonseekable_open(...) | nested_open(...) ) ...+> } @ read disable optional_qualifier exists @ identifier read_f; identifier f, p, s, off; type ssize_t, size_t, loff_t; expression E; identifier func; @@ ssize_t read_f(struct file *f, char *p, size_t s, loff_t *off) { <+... ( *off = E | *off += E | func(..., off, ...) | E = *off ) ...+> } @ read_no_fpos disable optional_qualifier exists @ identifier read_f; identifier f, p, s, off; type ssize_t, size_t, loff_t; @@ ssize_t read_f(struct file *f, char *p, size_t s, loff_t *off) { ... when != off } @ write @ identifier write_f; identifier f, p, s, off; type ssize_t, size_t, loff_t; expression E; identifier func; @@ ssize_t write_f(struct file *f, const char *p, size_t s, loff_t *off) { <+... ( *off = E | *off += E | func(..., off, ...) | E = *off ) ...+> } @ write_no_fpos @ identifier write_f; identifier f, p, s, off; type ssize_t, size_t, loff_t; @@ ssize_t write_f(struct file *f, const char *p, size_t s, loff_t *off) { ... when != off } @ fops0 @ identifier fops; @@ struct file_operations fops = { ... }; @ has_llseek depends on fops0 @ identifier fops0.fops; identifier llseek_f; @@ struct file_operations fops = { ... .llseek = llseek_f, ... }; @ has_read depends on fops0 @ identifier fops0.fops; identifier read_f; @@ struct file_operations fops = { ... .read = read_f, ... }; @ has_write depends on fops0 @ identifier fops0.fops; identifier write_f; @@ struct file_operations fops = { ... .write = write_f, ... }; @ has_open depends on fops0 @ identifier fops0.fops; identifier open_f; @@ struct file_operations fops = { ... .open = open_f, ... }; // use no_llseek if we call nonseekable_open //////////////////////////////////////////// @ nonseekable1 depends on !has_llseek && has_open @ identifier fops0.fops; identifier nso ~= "nonseekable_open"; @@ struct file_operations fops = { ... .open = nso, ... +.llseek = no_llseek, /* nonseekable */ }; @ nonseekable2 depends on !has_llseek @ identifier fops0.fops; identifier open.open_f; @@ struct file_operations fops = { ... .open = open_f, ... +.llseek = no_llseek, /* open uses nonseekable */ }; // use seq_lseek for sequential files ///////////////////////////////////// @ seq depends on !has_llseek @ identifier fops0.fops; identifier sr ~= "seq_read"; @@ struct file_operations fops = { ... .read = sr, ... +.llseek = seq_lseek, /* we have seq_read */ }; // use default_llseek if there is a readdir /////////////////////////////////////////// @ fops1 depends on !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; identifier readdir_e; @@ // any other fop is used that changes pos struct file_operations fops = { ... .readdir = readdir_e, ... +.llseek = default_llseek, /* readdir is present */ }; // use default_llseek if at least one of read/write touches f_pos ///////////////////////////////////////////////////////////////// @ fops2 depends on !fops1 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; identifier read.read_f; @@ // read fops use offset struct file_operations fops = { ... .read = read_f, ... +.llseek = default_llseek, /* read accesses f_pos */ }; @ fops3 depends on !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; identifier write.write_f; @@ // write fops use offset struct file_operations fops = { ... .write = write_f, ... + .llseek = default_llseek, /* write accesses f_pos */ }; // Use noop_llseek if neither read nor write accesses f_pos /////////////////////////////////////////////////////////// @ fops4 depends on !fops1 && !fops2 && !fops3 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; identifier read_no_fpos.read_f; identifier write_no_fpos.write_f; @@ // write fops use offset struct file_operations fops = { ... .write = write_f, .read = read_f, ... +.llseek = noop_llseek, /* read and write both use no f_pos */ }; @ depends on has_write && !has_read && !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; identifier write_no_fpos.write_f; @@ struct file_operations fops = { ... .write = write_f, ... +.llseek = noop_llseek, /* write uses no f_pos */ }; @ depends on has_read && !has_write && !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; identifier read_no_fpos.read_f; @@ struct file_operations fops = { ... .read = read_f, ... +.llseek = noop_llseek, /* read uses no f_pos */ }; @ depends on !has_read && !has_write && !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; @@ struct file_operations fops = { ... +.llseek = noop_llseek, /* no read or write fn */ }; ===== End semantic patch ===== Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Julia Lawall <julia@diku.dk> Cc: Christoph Hellwig <hch@infradead.org>
2010-09-15scsi: autoconvert trivial BKL users to private mutexArnd Bergmann
All these files use the big kernel lock in a trivial way to serialize their private file operations, typically resulting from an earlier semi-automatic pushdown from VFS. None of these drivers appears to want to lock against other code, and they all use the BKL as the top-level lock in their file operations, meaning that there is no lock-order inversion problem. Consequently, we can remove the BKL completely, replacing it with a per-file mutex in every case. Using a scripted approach means we can avoid typos. file=$1 name=$2 if grep -q lock_kernel ${file} ; then if grep -q 'include.*linux.mutex.h' ${file} ; then sed -i '/include.*<linux\/smp_lock.h>/d' ${file} else sed -i 's/include.*<linux\/smp_lock.h>.*$/include <linux\/mutex.h>/g' ${file} fi sed -i ${file} \ -e "/^#include.*linux.mutex.h/,$ { 1,/^\(static\|int\|long\)/ { /^\(static\|int\|long\)/istatic DEFINE_MUTEX(${name}_mutex); } }" \ -e "s/\(un\)*lock_kernel\>[ ]*()/mutex_\1lock(\&${name}_mutex)/g" \ -e '/[ ]*cycle_kernel_lock();/d' else sed -i -e '/include.*\<smp_lock.h\>/d' ${file} \ -e '/cycle_kernel_lock()/d' fi Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: linux-scsi@vger.kernel.org Cc: "James E.J. Bottomley" <James.Bottomley@suse.de>
2010-07-28[SCSI] dpt_i2o: move range check forwardDan Carpenter
The check to test that "bus_no" was valid came after we had already used it as an array offset. This patch moves it forward. Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-07-27[SCSI] dpt_i2o: Use GFP_ATOMIC when a lock is heldJulia Lawall
The function adpt_i2o_post_wait is called from several places, in some of which, such as adpt_abort, a lock may be held. The functions adpt_i2o_reparse_lct and adpt_i2o_lct_get are called from several places, including adpt_rescan where a lock may be held. The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @gfp exists@ identifier fn; position p; @@ fn(...) { ... when != spin_unlock_irqrestore when any GFP_KERNEL@p ... when any } @locked@ identifier gfp.fn; @@ spin_lock_irqsave(...) ... when != spin_unlock_irqrestore fn(...) @depends on locked@ position gfp.p; @@ - GFP_KERNEL@p + GFP_ATOMIC // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-05-17scsi: Push down BKL into ioctl functionsArnd Bergmann
Push down the bkl into ioctl functions on the scsi layer. [jkacur: Forward declaration missing ';'. Conflicting declaraction in megaraid.h changed Fixed missing inodes declarations] Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: John Kacur <jkacur@redhat.com> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
2010-04-08[SCSI] dpt_i2o: several use after free issuesDan Carpenter
adpt_i2o_delete_hba() calls kfree() so we have to save "pHba->next" before calling it. Also inside adpt_i2o_delete_hba() itself, there was another use after free bug which I fixed by moving the kfree() down a line. Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-10-31dpt_i2o: Fix typo of EINVALOGAWA Hirofumi
Commit ef7562b7f28319e6dd1f85dc1af87df2a7a84832 ("dpt_i2o: Fix up copy*user") had a silly typo: EINVAL should be -EINVAL. Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Cc: stable@kernel.org Cc: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-10-29dpt_i2o: Fix up copy*userAlan Cox
Signed-off-by: Alan Cox <alan@linux.intel.com> Cc: stable@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07dma-mapping: replace all DMA_32BIT_MASK macro with DMA_BIT_MASK(32)Yang Hongyang
Replace all DMA_32BIT_MASK macro with DMA_BIT_MASK(32) Signed-off-by: Yang Hongyang<yanghy@cn.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07dma-mapping: replace all DMA_64BIT_MASK macro with DMA_BIT_MASK(64)Yang Hongyang
Replace all DMA_64BIT_MASK macro with DMA_BIT_MASK(64) Signed-off-by: Yang Hongyang<yanghy@cn.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-15[SCSI] dpt_i2o: fix transferred data length for scsi_set_resid()Miquel van Smoorenburg
dpt_i2o.c::adpt_i2o_to_scsi() reads the value at (reply+5) which should contain the length in bytes of the transferred data. This would be correct if reply was a u32 *. However it is a void * here, so we need to read the value at (reply+20) instead. The value at (reply+5) is usually 0xff0000, which is apparently 'large enough' and didn't cause any trouble until 2.6.27 where commit 427e59f09fdba387547106de7bab980b7fff77be Author: James Bottomley <James.Bottomley@HansenPartnership.com> Date: Sat Mar 8 18:24:17 2008 -0600 [SCSI] make use of the residue value caused this to become visible through e.g. iostat -x . Signed-off-by: Miquel van Smoorenburg <mikevs@xs4all.net> Cc: Stable Tree <stable@kernel.org> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-10-16device create: scsi: convert device_create_drvdata to device_createGreg Kroah-Hartman
Now that device_create() has been audited, rename things back to the original call to be sane. Cc: James E.J. Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-07-21device create: scsi: convert device_create to device_create_drvdataGreg Kroah-Hartman
device_create() is race-prone, so use the race-free device_create_drvdata() instead as device_create() is going away. Cc: James E.J. Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-06-20dpt_i20: BKL pushdownJonathan Corbet
Add lock_kernel() calls to adpt_open() Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2008-05-08drivers/scsi/dpt_i2o.c: fix build on alphaAndrew Morton
alpha: drivers/scsi/dpt_i2o.c:1997: error: implicit declaration of function 'adpt_alpha_info' drivers/scsi/dpt_i2o.c: At top level: drivers/scsi/dpt_i2o.c:2032: warning: conflicting types for 'adpt_alpha_info' drivers/scsi/dpt_i2o.c:2032: error: static declaration of 'adpt_alpha_info' follows non-static declaration drivers/scsi/dpt_i2o.c:1997: error: previous implicit declaration of 'adpt_alpha_info' was here Due to a copy-n-paste error in drivers/scsi/dpti.h. Fix that up and remove some of the many daft static-declarations-in-a-header which this driver enjoys. Cc: Miquel van Smoorenburg <miquels@cistron.nl> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-02Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: [SCSI] aic94xx: fix section mismatch [SCSI] u14-34f: Fix 32bit only problem [SCSI] dpt_i2o: sysfs code [SCSI] dpt_i2o: 64 bit support [SCSI] dpt_i2o: move from virt_to_bus/bus_to_virt to dma_alloc_coherent [SCSI] dpt_i2o: use standard __init / __exit code [SCSI] megaraid_sas: fix suspend/resume sections [SCSI] aacraid: Add Power Management support [SCSI] aacraid: Fix jbod operations scan issues [SCSI] aacraid: Fix warning about macro side-effects [SCSI] add support for variable length extended commands [SCSI] Let scsi_cmnd->cmnd use request->cmd buffer [SCSI] bsg: add large command support [SCSI] aacraid: Fix down_interruptible() to check the return value correctly [SCSI] megaraid_sas; Update the Version and Changelog [SCSI] ibmvscsi: Handle non SCSI error status [SCSI] bug fix for free list handling [SCSI] ipr: Rename ipr's state scsi host attribute to prevent collisions [SCSI] megaraid_mbox: fix Dell CERC firmware problem
2008-05-02[SCSI] dpt_i2o: sysfs codeMiquel van Smoorenburg
Create a /sys/class/dpt_i2o directory and populate it with dptiN directories. Each dptiN directory contains a "dev" file that makes udev create /dev/dptiN Signed-off-by: Miquel van Smoorenburg <miquels@cistron.nl> Acked-by: Mark Salyzyn <Mark_Salyzyn@adaptec.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-05-02[SCSI] dpt_i2o: 64 bit supportMiquel van Smoorenburg
This is the code to actually support 64 bit platforms. 64 bit DMA is enabled on both x86_32 PAE and 64 bit platforms. This code is based in part on the unofficial adaptec 64-bit dpt_i2o driver update that I got from Mark Salyzyn at Adaptec. Signed-off-by: Miquel van Smoorenburg <miquels@cistron.nl> Acked-by: Mark Salyzyn <Mark_Salyzyn@adaptec.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-05-02[SCSI] dpt_i2o: move from virt_to_bus/bus_to_virt to dma_alloc_coherentMiquel van Smoorenburg
Remove virt_to_bus/bus_to_virt code from dpt_i2o, and use dma_alloc_coherent() / dma_free_coherent(). This is in preparation of 64-bit support, dma_alloc_coherent() can allocate memory in the lower 32 bits of physical memory which is needed because the HBA only supports message blocks under 4GB This code is based in part on the unofficial adaptec 64-bit dpt_i2o driver update that I got from Mark Salyzyn at Adaptec. Signed-off-by: Miquel van Smoorenburg <miquels@cistron.nl> Acked-by: Mark Salyzyn <Mark_Salyzyn@adaptec.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-05-02[SCSI] dpt_i2o: use standard __init / __exit codeMiquel van Smoorenburg
Update dpt_i2o.c to use the standard __init / __exit code instead of the legacy '#include "scsi_module.c"' code. This is needed in preparation of 64-bit support. scsi_module.c calls scsi_add_host() with the device pointer set to NULL, and that crashes code like arch/x64/kernel/pci-gart_64.c::need_iommu(). The reboot_notifier code is deleted because it wasn't compiled in ever anyway, and it would be useless to duplicate it in the new code. Signed-off-by: Miquel van Smoorenburg <miquels@cistron.nl> Acked-by: Mark Salyzyn <Mark_Salyzyn@adaptec.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-04-28scsi: fix integer as NULL pointer warningsHarvey Harrison
drivers/scsi/aic7xxx/aic7770_osm.c:53:58: warning: Using plain integer as NULL pointer drivers/scsi/aic7xxx/aic7xxx_osm_pci.c:355:47: warning: Using plain integer as NULL pointer drivers/scsi/aic7xxx/aic7xxx_osm_pci.c:372:55: warning: Using plain integer as NULL pointer drivers/scsi/aha152x.c:997:28: warning: Using plain integer as NULL pointer drivers/scsi/aha152x.c:1003:28: warning: Using plain integer as NULL pointer drivers/scsi/aha152x.c:1165:46: warning: Using plain integer as NULL pointer drivers/scsi/fdomain.c:1446:40: warning: Using plain integer as NULL pointer drivers/scsi/sym53c8xx_2/sym_hipd.c:1650:51: warning: Using plain integer as NULL pointer drivers/scsi/sym53c8xx_2/sym_hipd.c:3171:42: warning: Using plain integer as NULL pointer drivers/scsi/sym53c8xx_2/sym_hipd.c:5732:52: warning: Using plain integer as NULL pointer drivers/scsi/ncr53c8xx.c:8189:31: warning: Using plain integer as NULL pointer drivers/scsi/ncr53c8xx.c:8225:34: warning: Using plain integer as NULL pointer drivers/scsi/dpt_i2o.c:156:32: warning: Using plain integer as NULL pointer drivers/scsi/ultrastor.c:954:42: warning: Using plain integer as NULL pointer drivers/scsi/ultrastor.c:1104:18: warning: Using plain integer as NULL pointer Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-01-30[SCSI] remove use_sg_chainingJames Bottomley
With the sg table code, every SCSI driver is now either chain capable or broken (or has sg_tablesize set so chaining is never activated), so there's no need to have a check in the host template. Also tidy up the code by moving the scatterlist size defines into the SCSI includes and permit the last entry of the scatterlist pools not to be a power of two. Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-23[SCSI] dpt_i2o: use constant instead of bare valueSalyzyn, Mark
0x02 becomes SAM_STAT_CHECK_CONDITION Signed-off-by: Mark Salyzyn <aacraid@adaptec.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-23[SCSI] replace sizeof sense_buffer with SCSI_SENSE_BUFFERSIZEFUJITA Tomonori
This replaces sizeof sense_buffer with SCSI_SENSE_BUFFERSIZE in several LLDs. It's a preparation for the future changes to remove sense_buffer array in scsi_cmnd structure. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2007-12-18[SCSI] dpt_i2o: driver is only 32 bit so don't set 64 bit DMA maskJames Bottomley
This fixes a potential corruption bug where the truncation would cause reading or writing to the wrong memory area on machines with >4GB of main memory. Cc: Stable Kernel Tree <stable@kernel.org> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2007-12-10revert "dpt_i2o: convert to SCSI hotplug model"Andrew Morton
revert commit 55d9fcf57ba5ec427544fca7abc335cf3da78160 Author: Matthew Wilcox <matthew@wil.cx> Date: Mon Jul 30 15:19:18 2007 -0600 [SCSI] dpt_i2o: convert to SCSI hotplug model - Delete refereces to HOSTS_C - Switch to module_init/module_exit instead of detect/release - Don't pass around the host template and rename it to adpt_template - Switch from scsi_register/scsi_unregister to scsi_host_alloc, scsi_add_host, scsi_scan_host and scsi_host_put. Because it caused (for unknown reasons) Andres' all-data-reads-as-zeroes problem, reported at http://groups.google.com/group/fa.linux.kernel/msg/083a9acff0330234 Cc: Matthew Wilcox <matthew@wil.cx> Cc: "Salyzyn, Mark" <mark_salyzyn@adaptec.com> Cc: James Bottomley <James.Bottomley@SteelEye.com> Acked-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Anders Henke <anders.henke@1und1.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-16[SCSI] add use_sg_chaining option to scsi_host_templateFUJITA Tomonori
This option is true if a low-level driver can support sg chaining. This will be removed eventually when all the drivers are converted to support sg chaining. q->max_phys_segments is set to SCSI_MAX_SG_SEGMENTS if false. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2007-10-12[SCSI] dpt_i2o: Fix section mismatchJoe Korty
Fix section mismatch in the Adaptec DPT SCSI Raid driver. WARNING: vmlinux.o(.init.text+0x1fcd2): Section mismatch: reference to .exit.text:adpt_exit (between 'adpt_init' and 'ahc_linux_init') This warning is due to adaptec device detection calling the exit routine on failure to properly register the adaptec device. The exit routine + call was added on July 30 by Commit: 55d9fcf57ba5ec427544fca7abc335cf3da78160 Author: Matthew Wilcox Subject: [SCSI] dpt_i2o: convert to SCSI hotplug model. Mathew: isn't a module exit routine a little too strong to be calling on the failure of a single device? Module exit implies that other, non-failing adaptec raid devices will also get shut down. Signed-off-by: Joe Korty <joe.korty@ccur.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-10-12[SCSI] kmalloc + memset conversion to kzallocMariusz Kozlowski
In NCR_D700, a4000t, aic7xxx_old, bvme6000, dpt_i2o, gdth, lpfc, megaraid, mvme16x osst, pluto, qla2xxx, zorro7xx Signed-off-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-07-31[SCSI] dpt_i2o: convert to SCSI hotplug modelMatthew Wilcox
- Delete refereces to HOSTS_C - Switch to module_init/module_exit instead of detect/release - Don't pass around the host template and rename it to adpt_template - Switch from scsi_register/scsi_unregister to scsi_host_alloc, scsi_add_host, scsi_scan_host and scsi_host_put. Signed-off-by: Matthew Wilcox <matthew@wil.cx> Acked-by: "Salyzyn, Mark" <mark_salyzyn@adaptec.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-05-31[SCSI] dpt_i2o: convert to use the data buffer accessorsFUJITA Tomonori
- remove the unnecessary map_single path. - convert to use the new accessors for the sg lists and the parameters. Jens Axboe <jens.axboe@oracle.com> did the for_each_sg cleanup. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> ACK. Code inspected. Driver changes NOT unit tested or compile tested. Acked-by: "Salyzyn, Mark" <mark_salyzyn@adaptec.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-05-08Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6Linus Torvalds
* master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (58 commits) [SCSI] zfcp: clear boxed flag on unit reopen. [SCSI] zfcp: clear adapter failed flag if an fsf request times out. [SCSI] zfcp: rework request ID management. [SCSI] zfcp: Fix deadlock between zfcp ERP and SCSI [SCSI] zfcp: Locking for req_no and req_seq_no [SCSI] zfcp: print S_ID and D_ID with 3 bytes [SCSI] ipr: Use PCI-E reset API for new ipr adapter [SCSI] qla2xxx: Update version number to 8.01.07-k7. [SCSI] qla2xxx: Add MSI support. [SCSI] qla2xxx: Correct pci_set_msi() usage semantics. [SCSI] qla2xxx: Attempt to stop firmware only if it had been previously executed. [SCSI] qla2xxx: Honor NVRAM port-down-retry-count settings. [SCSI] qla2xxx: Error-out during probe() if we're unable to complete HBA initialization. [SCSI] zfcp: Stop system after memory corruption [SCSI] mesh: cleanup variable usage in interrupt handler [SCSI] megaraid: replace yield() with cond_resched() [SCSI] megaraid: fix warnings when CONFIG_PROC_FS=n [SCSI] aacraid: correct SUN products to README [SCSI] aacraid: superfluous adapter reset for IBM 8 series ServeRAID controllers [SCSI] aacraid: kexec fix (reset interrupt handler) ...
2007-05-08header cleaning: don't include smp_lock.h when not usedRandy Dunlap
Remove includes of <linux/smp_lock.h> where it is not used/needed. Suggested by Al Viro. Builds cleanly on x86_64, i386, alpha, ia64, powerpc, sparc, sparc64, and arm (all 59 defconfigs). Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-06[SCSI] dpt_i2o: kmalloc/memset->kzallocvignesh.babu@wipro.com
Replacing kmalloc/memset combination with kzalloc. Signed-off-by: vignesh babu <vignesh.babu@wipro.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-04-01[SCSI] dpt_i2o: remove dead codeAdrian Bunk
The Coverity checker spotted this dead code introduced by commit a07f353701acae77e023f6270e8af353b37af7c4. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: "Salyzyn, Mark" <mark_salyzyn@adaptec.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-02-12[PATCH] mark struct file_operations const 6Arjan van de Ven
Many struct file_operations in the kernel can be "const". Marking them const moves these to the .rodata section, which avoids false sharing with potential dirty data. In addition it'll catch accidental writes at compile time to these shared resources. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2006-12-13[PATCH] getting rid of all casts of k[cmz]alloc() callsRobert P. J. Day
Run this: #!/bin/sh for f in $(grep -Erl "\([^\)]*\) *k[cmz]alloc" *) ; do echo "De-casting $f..." perl -pi -e "s/ ?= ?\([^\)]*\) *(k[cmz]alloc) *\(/ = \1\(/" $f done And then go through and reinstate those cases where code is casting pointers to non-pointers. And then drop a few hunks which conflicted with outstanding work. Cc: Russell King <rmk@arm.linux.org.uk>, Ian Molton <spyro@f2s.com> Cc: Mikael Starvik <starvik@axis.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jeff Dike <jdike@addtoit.com> Cc: Greg KH <greg@kroah.com> Cc: Jens Axboe <jens.axboe@oracle.com> Cc: Paul Fulghum <paulkf@microgate.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Karsten Keil <kkeil@suse.de> Cc: Mauro Carvalho Chehab <mchehab@infradead.org> Cc: Jeff Garzik <jeff@garzik.org> Cc: James Bottomley <James.Bottomley@steeleye.com> Cc: Ian Kent <raven@themaw.net> Cc: Steven French <sfrench@us.ibm.com> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Neil Brown <neilb@cse.unsw.edu.au> Cc: Jaroslav Kysela <perex@suse.cz> Cc: Takashi Iwai <tiwai@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-05IRQ: Maintain regs pointer globally rather than passing to IRQ handlersDavid Howells
Maintain a per-CPU global "struct pt_regs *" variable which can be used instead of passing regs around manually through all ~1800 interrupt handlers in the Linux kernel. The regs pointer is used in few places, but it potentially costs both stack space and code to pass it around. On the FRV arch, removing the regs parameter from all the genirq function results in a 20% speed up of the IRQ exit path (ie: from leaving timer_interrupt() to leaving do_IRQ()). Where appropriate, an arch may override the generic storage facility and do something different with the variable. On FRV, for instance, the address is maintained in GR28 at all times inside the kernel as part of general exception handling. Having looked over the code, it appears that the parameter may be handed down through up to twenty or so layers of functions. Consider a USB character device attached to a USB hub, attached to a USB controller that posts its interrupts through a cascaded auxiliary interrupt controller. A character device driver may want to pass regs to the sysrq handler through the input layer which adds another few layers of parameter passing. I've build this code with allyesconfig for x86_64 and i386. I've runtested the main part of the code on FRV and i386, though I can't test most of the drivers. I've also done partial conversion for powerpc and MIPS - these at least compile with minimal configurations. This will affect all archs. Mostly the changes should be relatively easy. Take do_IRQ(), store the regs pointer at the beginning, saving the old one: struct pt_regs *old_regs = set_irq_regs(regs); And put the old one back at the end: set_irq_regs(old_regs); Don't pass regs through to generic_handle_irq() or __do_IRQ(). In timer_interrupt(), this sort of change will be necessary: - update_process_times(user_mode(regs)); - profile_tick(CPU_PROFILING, regs); + update_process_times(user_mode(get_irq_regs())); + profile_tick(CPU_PROFILING); I'd like to move update_process_times()'s use of get_irq_regs() into itself, except that i386, alone of the archs, uses something other than user_mode(). Some notes on the interrupt handling in the drivers: (*) input_dev() is now gone entirely. The regs pointer is no longer stored in the input_dev struct. (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking. It does something different depending on whether it's been supplied with a regs pointer or not. (*) Various IRQ handler function pointers have been moved to type irq_handler_t. Signed-Off-By: David Howells <dhowells@redhat.com> (cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
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