commit de5e2ddf9bb3ce7b643223b9b0718062254f302f upstream. Unloading ipmi module can trigger following error. (if CONFIG_DEBUG_SPINLOCK=y) [ 9633.779590] BUG: spinlock bad magic on CPU#1, rmmod/7170 [ 9633.779606] lock: f41f5414, .magic: 00000000, .owner: <none>/-1, .owner_cpu: 0 [ 9633.779626] Pid: 7170, comm: rmmod Not tainted 2.6.36-rc7-11474-gb71eb1e-dirty #328 [ 9633.779644] Call Trace: [ 9633.779657] [<c13921cc>] ? printk+0x18/0x1c [ 9633.779672] [<c11a1f33>] spin_bug+0xa3/0xf0 [ 9633.779685] [<c11a1ffd>] do_raw_spin_lock+0x7d/0x160 [ 9633.779702] [<c1131537>] ? release_sysfs_dirent+0x47/0xb0 [ 9633.779718] [<c1131b78>] ? sysfs_addrm_finish+0xa8/0xd0 [ 9633.779734] [<c1394bac>] _raw_spin_lock_irqsave+0xc/0x20 [ 9633.779752] [<f99d93da>] cleanup_one_si+0x6a/0x200 [ipmi_si] [ 9633.779768] [<c11305b2>] ? sysfs_hash_and_remove+0x72/0x80 [ 9633.779786] [<f99dcf26>] ipmi_pnp_remove+0xd/0xf [ipmi_si] [ 9633.779802] [<c11f622b>] pnp_device_remove+0x1b/0x40 Fix this by initializing spinlocks in a smi_info_alloc() helper function, right after memory allocation and clearing. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Acked-by: David Miller <davem@davemloft.net> Cc: Yinghai Lu <yinghai@kernel.org> Acked-by: Corey Minyard <cminyard@mvista.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
When modprobe.conf has options ipmi_si type="kcs" ports=0xCA2 regspacings="4" ipmi_si can be loaded properly, but when try to unload it get: Sep 20 15:00:27 xx abrt: Kerneloops: Reported 1 kernel oopses to Abrt Sep 20 15:00:27 xx abrtd: Directory 'kerneloops-1285020027-1' creation detected Sep 20 15:00:27 xx abrtd: New crash /var/spool/abrt/kerneloops-1285020027-1, processing Sep 20 15:01:09 xx kernel: ------------[ cut here ]------------ Sep 20 15:01:09 xx kernel: WARNING: at drivers/base/driver.c:262 driver_unregister+0x8a/0xa0() Sep 20 15:01:09 xx kernel: Hardware name: Sun Fire x4800 Sep 20 15:01:09 xx kernel: Unexpected driver unregister! Sep 20 15:01:09 xx kernel: Modules linked in: ipmi_si(-) ipmi_msghandler ip6table_filter ip6_tables ebtable_nat ebtables ipt_MASQUERADE iptable_nat nf_nat bridge stp llc autofs4 sunrpc cpufreq_ondemand acpi_cpufreq freq_table mperf xt_physdev be2iscsi iscsi_boot_sysfs bnx2i cnic uio cxgb3i iw_cxgb3 cxgb3 mdio ib_iser rdma_cm ib_cm iw_cm ib_sa ib_mad ib_core ib_addr ipv6 iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi dm_mirror dm_region_hash dm_log dm_mod vhost_net macvtap macvlan tun kvm_intel kvm uinput sg ses enclosure ahci libahci pcspkr i2c_i801 i2c_core iTCO_wdt iTCO_vendor_support igb dca i7core_edac edac_core ext3 jbd mbcache sd_mod crc_t10dif megaraid_sas [last unloaded: ipmi_devintf] Sep 20 15:01:09 xx kernel: Pid: 10625, comm: modprobe Tainted: G W 2.6.36-rc5-tip+ #6 Sep 20 15:01:09 xx kernel: Call Trace: Sep 20 15:01:09 xx kernel: [<ffffffff810600df>] warn_slowpath_common+0x7f/0xc0 Sep 20 15:01:09 xx kernel: [<ffffffff810601d6>] warn_slowpath_fmt+0x46/0x50 Sep 20 15:01:09 xx kernel: [<ffffffff812ff60a>] driver_unregister+0x8a/0xa0 Sep 20 15:01:09 xx kernel: [<ffffffff812ae112>] pnp_unregister_driver+0x12/0x20 Sep 20 15:01:09 xx kernel: [<ffffffffa01d0327>] cleanup_ipmi_si+0x3c/0xa7 [ipmi_si] Sep 20 15:01:09 xx kernel: [<ffffffff81099a60>] sys_delete_module+0x1a0/0x270 Sep 20 15:01:09 xx kernel: [<ffffffff814b7070>] ? do_page_fault+0x150/0x320 Sep 20 15:01:09 xx kernel: [<ffffffff8100b072>] system_call_fastpath+0x16/0x1b Sep 20 15:01:09 xx kernel: ---[ end trace 0d1967161adcee0d ]--- We need to check if ipmi_pnp_driver is loaded before we try to unload it. Signed-off-by: Yinghai Lu <yinghai@kernel.org> Cc: Corey Minyard <minyard@acm.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
After d9e1b6c45059ccf ("ipmi: fix ACPI detection with regspacing") we get
[ 11.026326] ipmi_si: probing via ACPI
[ 11.030019] ipmi_si 00:09: (null) regsize 1 spacing 1 irq 0
[ 11.035594] ipmi_si: Adding ACPI-specified kcs state machine
on an old system with only one range for ipmi kcs range.
Try to fix it by adding another res pointer.
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* 'params' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus: (22 commits) param: don't deref arg in __same_type() checks param: update drivers/acpi/debug.c to new scheme param: use module_param in drivers/message/fusion/mptbase.c ide: use module_param_named rather than module_param_call param: update drivers/char/ipmi/ipmi_watchdog.c to new scheme param: lock if_sdio's lbs_helper_name and lbs_fw_name against sysfs changes. param: lock myri10ge_fw_name against sysfs changes. param: simple locking for sysfs-writable charp parameters param: remove unnecessary writable charp param: add kerneldoc to moduleparam.h param: locking for kernel parameters param: make param sections const. param: use free hook for charp (fix leak of charp parameters) param: add a free hook to kernel_param_ops. param: silence .init.text references from param ops Add param ops struct for hvc_iucv driver. nfs: update for module_param_named API change AppArmor: update for module_param_named API change param: use ops in struct kernel_param, rather than get and set fns directly param: move the EXPORT_SYMBOL to after the definitions. ...
* 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6: mmc_spi: Fix unterminated of_match_table of/sparc: fix build regression from of_device changes of/device: Replace struct of_device with struct platform_device
Print out the reg spacing and size for spmi and smbios so BIOS developers can make them consistent. Also remove extra PFX on the duplicating path. Signed-off-by: Yinghai Lu <yinghai@kernel.org> Cc: Corey Minyard <minyard@acm.org> Cc: Matthew Garrett <mjg@redhat.com> Cc: Len Brown <len.brown@intel.com> Cc: Myron Stowe <myron.stowe@hp.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Free the temporary info struct when we have duplicated ones. Signed-off-by: Yinghai Lu <yinghai@kernel.org> Cc: Corey Minyard <minyard@acm.org> Cc: Matthew Garrett <mjg@redhat.com> Cc: Len Brown <len.brown@intel.com> Cc: Myron Stowe <myron.stowe@hp.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Fix a warning message generated by GCC, and also updates a web address pointing to a pdf containing information. CC [M] drivers/char/ipmi/ipmi_si_intf.o drivers/char/ipmi/ipmi_si_intf.c: In function 'try_init_spmi': drivers/char/ipmi/ipmi_si_intf.c:2016:8: warning: variable 'addr_space' set but not used Signed-off-by: Sergey V. <sftp.mtuci@gmail.com> Signed-off-by: Justin P. Mattock <justinmattock@gmail.com> Acked-by: Corey Minyard <minyard@acm.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This is one of the most interesting users of module parameters in the tree, so weaning it off the old-style non-const module_param_call scheme is a useful exercise. I was confused by set_param_int/get_param_int (vs. the normal param_set_int and param_get_int), so I renamed set_param_int to set_param_timeout, and re-used param_get_int directly instead of get_param_int. I also implemented param_check_wdog_ifnum and param_check_timeout, so now the ifnum_to_use and timeout/pretimeout parameters can just use plain module_param(). Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Cc: Corey Minyard <minyard@acm.org> Cc: openipmi-developer@lists.sourceforge.net
After the commit that changed ipmi_si detecting sequence from SMBIOS/ACPI
to ACPI/SMBIOS,
| commit 754d453185275951d39792865927ec494fa1ebd8
| Author: Matthew Garrett <mjg@redhat.com>
| Date: Wed May 26 14:43:47 2010 -0700
|
| ipmi: change device discovery order
|
| The ipmi spec provides an ordering for si discovery. Change the driver to
| match, with the exception of preferring smbios to SPMI as HPs (at least)
| contain accurate information in the former but not the latter.
ipmi_si can not be initialized.
[ 138.799739] calling init_ipmi_devintf+0x0/0x109 @ 1
[ 138.805050] ipmi device interface
[ 138.818131] initcall init_ipmi_devintf+0x0/0x109 returned 0 after 12797 usecs
[ 138.822998] calling init_ipmi_si+0x0/0xa90 @ 1
[ 138.840276] IPMI System Interface driver.
[ 138.846137] ipmi_si: probing via ACPI
[ 138.849225] ipmi_si 00:09: [io 0x0ca2] regsize 1 spacing 1 irq 0
[ 138.864438] ipmi_si: Adding ACPI-specified kcs state machine
[ 138.870893] ipmi_si: probing via SMBIOS
[ 138.880945] ipmi_si: Adding SMBIOS-specified kcs state machineipmi_si: duplicate interface
[ 138.896511] ipmi_si: probing via SPMI
[ 138.899861] ipmi_si: Adding SPMI-specified kcs state machineipmi_si: duplicate interface
[ 138.917095] ipmi_si: Trying ACPI-specified kcs state machine at i/o address 0xca2, slave address 0x0, irq 0
[ 138.928658] ipmi_si: Interface detection failed
[ 138.953411] initcall init_ipmi_si+0x0/0xa90 returned 0 after 110847 usecs
in smbios has
DMI/SMBIOS
Handle 0x00C5, DMI type 38, 18 bytes
IPMI Device Information
Interface Type: KCS (Keyboard Control Style)
Specification Version: 2.0
I2C Slave Address: 0x00
NV Storage Device: Not Present
Base Address: 0x0000000000000CA2 (I/O)
Register Spacing: 32-bit Boundaries
in DSDT has
Device (BMC)
{
Name (_HID, EisaId ("IPI0001"))
Method (_STA, 0, NotSerialized)
{
If (LEqual (OSN, Zero))
{
Return (Zero)
}
Return (0x0F)
}
Name (_STR, Unicode ("IPMI_KCS"))
Name (_UID, Zero)
Name (_CRS, ResourceTemplate ()
{
IO (Decode16,
0x0CA2, // Range Minimum
0x0CA2, // Range Maximum
0x00, // Alignment
0x01, // Length
)
IO (Decode16,
0x0CA6, // Range Minimum
0x0CA6, // Range Maximum
0x00, // Alignment
0x01, // Length
)
})
Method (_IFT, 0, NotSerialized)
{
Return (One)
}
Method (_SRV, 0, NotSerialized)
{
Return (0x0200)
}
}
so the reg spacing should be 4 instead of 1.
Try to calculate regspacing for this kind of system.
Observed on a Sun Fire X4800. Other OSes work and pass certification.
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Cc: Bjorn Helgaas <bjorn.helgaas@hp.com>
Acked-by: Matthew Garrett <mjg@redhat.com>
Cc: Len Brown <len.brown@intel.com>
Cc: Myron Stowe <myron.stowe@hp.com>
Cc: Corey Minyard <minyard@acm.org>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>