linux-toradex.git/include/linux, branch v2.6.20.8

ide: use correct IDE error recovery

2007-04-13T20:47:05+00:00

ide: use correct IDE error recovery

IDE error recovery is using IDLE IMMEDIATE if the drive is busy or has DRQ set.
This violates the ATA spec (can only send IDLEÃ IMMEDIATE when drive is not
busy) and really hoses up some drives (modern drives will not be able to
recover using this error handling).  The correct thing to do is issue a SRST
followed by a SET FEATURES command.  This is what Western Digital recommends
for error recovery and what Western Digital says Windows does. Ã ItÃ also does
not violate the ATA spec as far as I can tell.

Bart:
* port the patch over the current tree
* undo the recalibration code removal
* send SET FEATURES command after checking for good drive status
* don't check whether the current request is of REQ_TYPE_ATA_{CMD,TASK}
  type because we need to send SET FEATURES before handling any requests
* some pre-ATA4 drives require INITIALIZE DEVICE PARAMETERS command before
  other commands (except IDENTIFY) so send SET FEATURES only if there are
  no pending drive->special requests
* update comments and patch description
* any bugs introduced by this patch are mine and not Suleiman's :-)

Signed-off-by: Suleiman Souhlal 
Acked-by: Alan Cox 
Cc: Chuck Ebbert 
Signed-off-by: Bartlomiej Zolnierkiewicz

Fix IFB net driver input device crashes

2007-04-13T20:47:04+00:00

[IFB]: Fix crash on input device removal

The input_device pointer is not refcounted, which means the device may
disappear while packets are queued, causing a crash when ifb passes packets
with a stale skb->dev pointer to netif_rx().

Fix by storing the interface index instead and do a lookup where neccessary.

Signed-off-by: Patrick McHardy 
Acked-by: Jamal Hadi Salim 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

UML - fix epoll

2007-04-06T10:43:11+00:00

UML/x86_64 needs the same packing of struct epoll_event as x86_64.

Signed-off-by: Jeff Dike 
Signed-off-by: Greg Kroah-Hartman

ide: remove clearing bmdma status from cdrom_decode_status() (rev #4)

2007-04-06T10:43:11+00:00

ide: remove clearing bmdma status from cdrom_decode_status() (rev #4)

patch 2/2:
  Remove clearing bmdma status from cdrom_decode_status() since ATA devices
  might need it as well.

  (http://lkml.org/lkml/2006/12/4/201 and http://lkml.org/lkml/2006/11/15/94)

Signed-off-by: Albert Lee 
Cc: Sergei Shtylyov 
Cc: Alan Cox 
Cc: "Adam W. Hawks" 
Cc: Chuck Ebbert 
Signed-off-by: Bartlomiej Zolnierkiewicz 
Signed-off-by: Greg Kroah-Hartman

ide: clear bmdma status in ide_intr() for ICHx controllers (revised #4)

2007-04-06T10:43:11+00:00

ide: clear bmdma status in ide_intr() for ICHx controllers (revised #4)

patch 1/2 (revised):
- Fix drive->waiting_for_dma to work with CDB-intr devices.
- Do the dma status clearing in ide_intr() and add a new
  hwif->ide_dma_clear_irq for Intel ICHx controllers.

Revised per Alan, Sergei and Bart's advice.

Patch against 2.6.20-rc6. Tested ok on my ICH4 and pdc20275 adapters.
Please review/apply, thanks.

Signed-off-by: Albert Lee 
Cc: Sergei Shtylyov 
Cc: Alan Cox 
Cc: Adam Hawks 
Cc: Chuck Ebbert 
Signed-off-by: Bartlomiej Zolnierkiewicz 
Signed-off-by: Greg Kroah-Hartman

fix MTIME_SEC_MAX on 32-bit

2007-03-23T19:49:23+00:00

The maximum seconds value we can handle on 32bit is LONG_MAX.

Cc: Ingo Molnar 
Signed-off-by: Andrew Morton 
Signed-off-by: Greg Kroah-Hartman

conntrack: fix {nf, ip}_ct_iterate_cleanup endless loops

2007-03-13T18:26:45+00:00

[NETFILTER]: conntrack: fix {nf,ip}_ct_iterate_cleanup endless loops

Fix {nf,ip}_ct_iterate_cleanup unconfirmed list handling:

- unconfirmed entries can not be killed manually, they are removed on
  confirmation or final destruction of the conntrack entry, which means
  we might iterate forever without making forward progress.

  This can happen in combination with the conntrack event cache, which
  holds a reference to the conntrack entry, which is only released when
  the packet makes it all the way through the stack or a different
  packet is handled.

- taking references to an unconfirmed entry and using it outside the
  locked section doesn't work, the list entries are not refcounted and
  another CPU might already be waiting to destroy the entry

What the code really wants to do is make sure the references of the hash
table to the selected conntrack entries are released, so they will be
destroyed once all references from skbs and the event cache are dropped.

Since unconfirmed entries haven't even entered the hash yet, simply mark
them as dying and skip confirmation based on that.

Signed-off-by: Patrick McHardy 
Signed-off-by: Greg Kroah-Hartman

throttle_vm_writeout(): don't loop on GFP_NOFS and GFP_NOIO allocations

2007-03-09T18:50:31+00:00

throttle_vm_writeout() is designed to wait for the dirty levels to subside. 
But if the caller holds IO or FS locks, we might be holding up that writeout.

So change it to take a single nap to give other devices a chance to clean some
memory, then return.

Cc: Nick Piggin 
Cc: OGAWA Hirofumi 
Cc: Kumar Gala 
Cc: Pete Zaitcev 
Signed-off-by: Andrew Morton 
Signed-off-by: Greg Kroah-Hartman

lockdep: forward declare struct task_struct

2007-03-09T18:50:30+00:00

3117df0453828bd045c16244e6f50e5714667a8a causes this:

In file included from arch/s390/kernel/early.c:13:
include/linux/lockdep.h:300: warning:
		"struct task_struct" declared inside parameter list
include/linux/lockdep.h:300:
		warning: its scope is only this definition or
		declaration, which is probably not what you want

Acked-by: Ingo Molnar 
Cc: Martin Schwidefsky 
Signed-off-by: Heiko Carstens 
Signed-off-by: Andrew Morton 
Signed-off-by: Greg Kroah-Hartman

ufs: restore back support of openstep

2007-03-09T18:50:29+00:00

This is a fix of regression, which triggered by ~2.6.16.

Patch with name ufs-directory-and-page-cache-from-blocks-to-pages.patch: in
additional to conversation from block to page cache mechanism added new
checks of directory integrity, one of them that directory entry do not
across directory chunks.

But some kinds of UFS: OpenStep UFS and Apple UFS (looks like these are the
same filesystems) have different directory chunk size, then common
UFSes(BSD and Solaris UFS).

So this patch adds ability to works with variable size of directory chunks,
and set it for ufstype=openstep to right size.

Tested on darwin ufs.

Signed-off-by: Evgeniy Dushistov 
Signed-off-by: Andrew Morton 
Signed-off-by: Greg Kroah-Hartman