pm24.git/Documentation/scsi, branch v4.1

genirq: Remove the deprecated 'IRQF_DISABLED' request_irq() flag entirely

2015-03-05T19:53:06Z

The IRQF_DISABLED flag is a NOOP and has been scheduled for removal since Linux v2.6.36 by commit 6932bf37bed4 ("genirq: Remove IRQF_DISABLED from core code"). According to commit e58aa3d2d0cc ("genirq: Run irq handlers with interrupts disabled"), running IRQ handlers with interrupts enabled can cause stack overflows when the interrupt line of the issuing device is still active. This patch ends the grace period for IRQF_DISABLED (i.e., SA_INTERRUPT in older versions of Linux) and removes the definition and all remaining usages of this flag. There's still a few non-functional references left in the kernel source: - The bigger hunk in Documentation/scsi/ncr53c8xx.txt is removed entirely as IRQF_DISABLED is gone now; the usage in older kernel versions (including the old SA_INTERRUPT flag) should be discouraged. The trouble of using IRQF_SHARED is a general problem and not specific to any driver. - I left the reference in Documentation/PCI/MSI-HOWTO.txt untouched since it has already been removed in linux-next. - All remaining references are changelogs that I suggest to keep. Signed-off-by: Valentin Rothberg Cc: Afzal Mohammed Cc: Arnd Bergmann Cc: Brian Norris Cc: Christoph Hellwig Cc: Dan Carpenter Cc: David Woodhouse Cc: Ewan Milne Cc: Eyal Perry Cc: Felipe Balbi Cc: Greg Kroah-Hartman Cc: H. Peter Anvin Cc: Hannes Reinecke Cc: Hongliang Tao Cc: Huacai Chen Cc: Jiri Kosina Cc: Jonathan Corbet Cc: Keerthy Cc: Laurent Pinchart Cc: Linus Torvalds Cc: Nishanth Menon Cc: Paul Bolle Cc: Peter Ujfalusi Cc: Peter Zijlstra Cc: Quentin Lambert Cc: Rajendra Nayak Cc: Ralf Baechle Cc: Santosh Shilimkar Cc: Sricharan R Cc: Thomas Gleixner Cc: Tony Lindgren Cc: Zhou Wang Cc: iss_storagedev@hp.com Cc: linux-mips@linux-mips.org Cc: linux-mtd@lists.infradead.org Link: http://lkml.kernel.org/r/1425565425-12604-1-git-send-email-valentinrothberg@gmail.com Signed-off-by: Ingo Molnar

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial

2014-12-12T18:08:06Z

Pull trivial tree update from Jiri Kosina: "Usual stuff: documentation updates, printk() fixes, etc" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (24 commits) intel_ips: fix a type in error message cpufreq: cpufreq-dt: Move newline to end of error message ps3rom: fix error return code treewide: fix typo in printk and Kconfig ARM: dts: bcm63138: change "interupts" to "interrupts" Replace mentions of "list_struct" to "list_head" kernel: trace: fix printk message scsi: mpt2sas: fix ioctl in comment zbud, zswap: change module author email clocksource: Fix 'clcoksource' typo in comment arm: fix wording of "Crotex" in CONFIG_ARCH_EXYNOS3 help gpio: msm-v1: make boolean argument more obvious usb: Fix typo in usb-serial-simple.c PCI: Fix comment typo 'COMFIG_PM_OPS' powerpc: Fix comment typo 'CONIFG_8xx' powerpc: Fix comment typos 'CONFiG_ALTIVEC' clk: st: Spelling s/stucture/structure/ isci: Spelling s/stucture/structure/ usb: gadget: zero: Spelling s/infrastucture/infrastructure/ treewide: Fix company name in module descriptions ...

libsas: remove task_collector mode

2014-11-27T15:40:24Z

The task_collector mode (or "latency_injector", (C) Dan Willians) is an optional I/O path in libsas that queues up scsi commands instead of directly sending it to the hardware. It generall increases latencies to in the optiomal case slightly reduce mmio traffic to the hardware. Only the obsolete aic94xx driver and the mvsas driver allowed to use it without recompiling the kernel, and most drivers didn't support it at all. Remove the giant blob of code to allow better optimizations for scsi-mq in the future. Signed-off-by: Christoph Hellwig Reviewed-by: Hannes Reinecke Acked-by: Dan Williams

wd719x: Add firmware documentation

2014-11-25T14:42:55Z

Add documentation and script to obtain required firmware. Signed-off-by: Ondrej Zary Reviewed-by: Hannes Reinecke Signed-off-by: Christoph Hellwig

scsi: drop reason argument from ->change_queue_depth

2014-11-24T13:45:27Z

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 Reviewed-by: Mike Christie Reviewed-by: Hannes Reinecke

Merge Linus' tree to be be to apply submitted patches to newer code than

2014-11-20T13:42:02Z

current trivial.git base

scsi: don't set tagging state from scsi_adjust_queue_depth

2014-11-12T10:19:43Z

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 Reviewed-by: Mike Christie Reviewed-by: Hannes Reinecke Reviewed-by: Martin K. Petersen

scsi: always assign block layer tags if enabled

2014-11-12T10:19:43Z

Allow a driver to ask for block layer tags by setting .use_blk_tags in the host template, in which case it will always see a valid value in request->tag, similar to the behavior when using blk-mq. This means even SCSI "untagged" commands will now have a tag, which is especially useful when using a host-wide tag map. Signed-off-by: Christoph Hellwig Reviewed-by: Mike Christie Reviewed-by: Martin K. Petersen Reviewed-by: Hannes Reinecke

st: add a debug_flag module parameter request

2014-11-12T10:15:55Z

This patch adds a debug_flag parameter that can be set on module load, and allows the DEBUG facility without a module recompile. Note that now DEBUG 1 is the default with this patch. Usage: modprobe st debug_flag=1 Signed-off-by: Laurence Oberman Acked-by: Kai M??kisara Signed-off-by: Christoph Hellwig

scsi: Fix "choir" and "beeing" malaprops

2014-10-29T13:33:46Z

Signed-off-by: Finn Thain Reviewed-by: Christoph Hellwig Signed-off-by: Jiri Kosina