linux/drivers/ide, branch v2.6.34.14

ide-cd: Do not access completed requests in the irq handler

2010-08-13T20:27:19Z

commit 110712828365ccafcc61a7f4db44c31ed4cf8793 upstream. ide_cd_error_cmd() can complete an erroneous request with leftover buffers. Signal this with its return value so that the request is not accessed after its completion in the irq handler and we oops. Signed-off-by: Borislav Petkov Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman

cmd640: fix kernel oops in test_irq() method

2010-08-02T17:29:28Z

commit a9ddabc52ce3757a4331d6c1e8bf4065333cc51b upstream. When implementing the test_iqr() method, I forgot that this driver is not an ordinary PCI driver and also needs to support VLB variant of the chip. Moreover, 'hwif->dev' should be NULL, potentially causing oops in pci_read_config_byte(). Signed-off-by: Sergei Shtylyov Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman

pata_pcmcia / ide-cs: Fix bad hashes for Transcend and kingston IDs

2010-05-05T18:48:48Z

This patch fixes the bad hashes for one Kingston and one Transcend card. Thanks to komuro for pointing this out. Signed-off-by: Kristoffer Ericson Signed-off-by: Jeff Garzik

pata_pcmcia/ide-cs: add IDs for transcend and kingston cards

2010-04-23T01:51:12Z

This patch adds idstrings for Kingston 1GB/4GB and Transcend 4GB/8GB. Signed-off-by: Kristoffer Ericson Signed-off-by: Jeff Garzik

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide-2.6

2010-04-08T14:45:36Z

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide-2.6: ide: Fix IDE taskfile with cfq scheduler ide: Must hold queue lock when requeueing ide: Requeue request after DMA timeout

ide: Fix IDE taskfile with cfq scheduler

2010-04-06T23:43:33Z

When ide taskfile access is being used (for example with hdparm --security commands) and cfq scheduler is selected, the scheduler crashes on BUG in cfq_put_request. The reason is that the cfq scheduler is tracking counts of read and write requests separately; the ide-taskfile subsystem allocates a read request and then flips the flag to make it a write request. The counters in cfq will mismatch. This patch changes ide-taskfile to allocate the READ or WRITE request as required and don't change the flag later. Signed-off-by: Mikulas Patocka Signed-off-by: David S. Miller

ide: Must hold queue lock when requeueing

2010-04-01T08:31:14Z

ide-atapi requeues requests without holding the queue lock. This patch fixes it by using ide_requeue_and_plug. Signed-off-by: Herbert Xu Signed-off-by: David S. Miller

ide: Requeue request after DMA timeout

2010-04-01T08:31:13Z

I noticed that my KVM virtual machines were experiencing IDE issues resulting in processes stuck on waiting for buffers to complete. The root cause is of course race conditions in the ancient qemu backend that I'm using. However, the fact that the guest isn't recovering is a bug. I've tracked it down to the change made last year to dequeue requests at the start rather than at the end in the IDE layer. commit 8f6205cd572fece673da0255d74843680f67f879 Author: Tejun Heo Date: Fri May 8 11:53:59 2009 +0900 ide: dequeue in-flight request The problem is that the function ide_dma_timeout_retry does not requeue the current request, causing one request to be lost for each DMA timeout. This patch fixes this by requeueing the request. Signed-off-by: Herbert Xu Signed-off-by: David S. Miller

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30T13:02:32Z

percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo Guess-its-ok-by: Christoph Lameter Cc: Ingo Molnar Cc: Lee Schermerhorn

Revert "ide: skip probe if there are no devices on the port (v2)"

2010-03-29T01:58:28Z

This reverts commit a20b2a44eca52818ef52a94959480b7e6ea2f528. As requested by David Fries. This makes CDROMs which are slave drives on a ribbon without a master disappear and causes other similar kinds of badness. Signed-off-by: David S. Miller