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* Merge commit 'v2.6.26' into bkl-removalJonathan Corbet2008-07-14
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| * scsi: fix integer as NULL pointer warningHarvey Harrison2008-05-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | drivers/scsi/aha152x.c:3585:60: warning: Using plain integer as NULL pointer drivers/scsi/aha152x.c:3845:56: warning: Using plain integer as NULL pointer drivers/scsi/qla1280.c:2814:37: warning: Using plain integer as NULL pointer drivers/scsi/atp870u.c:750:47: warning: Using plain integer as NULL pointer drivers/scsi/3w-9xxx.c:1281:36: warning: Using plain integer as NULL pointer drivers/scsi/3w-9xxx.c:1293:36: warning: Using plain integer as NULL pointer drivers/scsi/3w-9xxx.c:1301:35: warning: Using plain integer as NULL pointer drivers/scsi/hptiop.c:447:10: warning: Using plain integer as NULL pointer drivers/scsi/hptiop.c:457:10: warning: Using plain integer as NULL pointer drivers/scsi/hptiop.c:479:24: warning: Using plain integer as NULL pointer drivers/scsi/hptiop.c:483:22: warning: Using plain integer as NULL pointer drivers/scsi/hptiop.c:1213:23: warning: Using plain integer as NULL pointer drivers/scsi/hptiop.c:1214:23: 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>
* | Add a bunch of cycle_kernel_lock() callsJonathan Corbet2008-06-20
| | | | | | | | | | | | | | | | | | All of the open() functions which don't need the BKL on their face may still depend on its acquisition to serialize opens against driver initialization. So make those functions acquire then release the BKL to be on the safe side. Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* | Add "no BKL needed" comments to several driversJonathan Corbet2008-06-20
|/ | | | | | | | This documents the fact that somebody looked at the relevant open() functions and concluded that, due to their trivial nature, no locking was needed. Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* SCSI: convert struct class_device to struct deviceTony Jones2008-04-19
| | | | | | | | | | | | | It's big, but there doesn't seem to be a way to split it up smaller... Signed-off-by: Tony Jones <tonyj@suse.de> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Cc: Roland Dreier <rolandd@cisco.com> Cc: Sean Hefty <sean.hefty@intel.com> Cc: Hal Rosenstock <hal.rosenstock@gmail.com> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [SCSI] 3w-9xxx, 3w-xxxx: memset not needed in probeDenis Cheng2008-04-07
| | | | | | | | | | The memory return from scsi_host_alloc is alloced by kzalloc, which is already zero initilized, so memset not needed. Signed-off-by: Denis Cheng <crquan@gmail.com> Cc: Adam Radford <linuxraid@amcc.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] 3w-9xxx: use sg buffer copy helper functionsFUJITA Tomonori2008-04-07
| | | | | | Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Adam Radford <linuxraid@amcc.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] remove use_sg_chainingJames Bottomley2008-01-30
| | | | | | | | | | | 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>
* [SCSI] 3w-9xxx: fix abysmal write performance on some motherboardsTony Battersby2008-01-11
| | | | | | | | | | | | | | | | | | | | | | | The 3ware 9500S-8 SATA RAID controller exhibits terrible write performance when PCI memory-write-and-invalidate is disabled. This is easy to demonstrate by replacing pci_try_set_mwi() in the patch below with pci_clear_mwi(). My benchmarks show the following: MWI disabled: 15 MB/s write, 330 MB/s read MWI enabled: 240 MB/s write, 330 MB/s read Most motherboards will enable MWI without the driver having to set it explicitly, so most people probably wouldn't encounter this problem. For the few motherboards that don't enable it, this patch could give a 16x performance improvement for writing. This issue does not seem to affect the 9550SX controller, but the patch doesn't hurt it either. I haven't tested any of the other 3ware controllers. Signed-off-by: Tony Battersby <tonyb@cybernetics.com> Acked-by: adam radford <aradford@gmail.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SG] Update drivers to use sg helpersJens Axboe2007-10-22
| | | | Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* [SCSI] add use_sg_chaining option to scsi_host_templateFUJITA Tomonori2007-10-16
| | | | | | | | | | 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>
* Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6Linus Torvalds2007-07-22
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (60 commits) [SCSI] libsas: make ATA functions selectable by a config option [SCSI] bsg: unexport sg v3 helper functions [SCSI] bsg: fix bsg_unregister_queue [SCSI] bsg: make class backlinks [SCSI] 3w-9xxx: add support for 9690SA [SCSI] bsg: fix bsg_register_queue error path [SCSI] ESP: Increase ESP_BUS_TIMEOUT to 275. [SCSI] libsas: fix scr_read/write users and update the libata documentation [SCSI] mpt fusion: update Kconfig help [SCSI] scsi_transport_sas: add destructor for bsg [SCSI] iscsi_tcp: buggered kmalloc() [SCSI] qla2xxx: Update version number to 8.02.00-k2. [SCSI] qla2xxx: Add ISP25XX support. [SCSI] qla2xxx: Use pci_try_set_mwi(). [SCSI] qla2xxx: Use PCI-X/PCI-Express read control interfaces. [SCSI] qla2xxx: Re-factor isp_operations to static structures. [SCSI] qla2xxx: Validate mid-layer 'underflow' during check-condition handling. [SCSI] qla2xxx: Correct setting of 'current' and 'supported' speeds during FDMI registration. [SCSI] qla2xxx: Generalize iIDMA support. [SCSI] qla2xxx: Generalize FW-Interface-2 support. ...
| * [SCSI] 3w-9xxx: add support for 9690SAadam radford2007-07-21
| | | | | | | | | | | | | | | | | | | | The attached patch updates the 3ware 9000 driver: - Fix dma mask setting to fallback to 32-bit if 64-bit fails. - Add support for 9690SA controllers. Signed-off-by: Adam Radford <linuxraid@amcc.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* | some kmalloc/memset ->kzalloc (tree wide)Yoann Padioleau2007-07-19
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Transform some calls to kmalloc/memset to a single kzalloc (or kcalloc). Here is a short excerpt of the semantic patch performing this transformation: @@ type T2; expression x; identifier f,fld; expression E; expression E1,E2; expression e1,e2,e3,y; statement S; @@ x = - kmalloc + kzalloc (E1,E2) ... when != \(x->fld=E;\|y=f(...,x,...);\|f(...,x,...);\|x=E;\|while(...) S\|for(e1;e2;e3) S\) - memset((T2)x,0,E1); @@ expression E1,E2,E3; @@ - kzalloc(E1 * E2,E3) + kcalloc(E1,E2,E3) [akpm@linux-foundation.org: get kcalloc args the right way around] Signed-off-by: Yoann Padioleau <padator@wanadoo.fr> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Acked-by: Russell King <rmk@arm.linux.org.uk> Cc: Bryan Wu <bryan.wu@analog.com> Acked-by: Jiri Slaby <jirislaby@gmail.com> Cc: Dave Airlie <airlied@linux.ie> Acked-by: Roland Dreier <rolandd@cisco.com> Cc: Jiri Kosina <jkosina@suse.cz> Acked-by: Dmitry Torokhov <dtor@mail.ru> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Mauro Carvalho Chehab <mchehab@infradead.org> Acked-by: Pierre Ossman <drzeus-list@drzeus.cx> Cc: Jeff Garzik <jeff@garzik.org> Cc: "David S. Miller" <davem@davemloft.net> Acked-by: Greg KH <greg@kroah.com> Cc: James Bottomley <James.Bottomley@steeleye.com> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [SCSI] 3w-9xxx: eliminate missed map_single pathFUJITA Tomonori2007-05-31
| | | | | | | This removes the remaining unnecessary map_single path Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] 3w-9xxx: convert to use the data buffer accessorsFUJITA Tomonori2007-05-31
| | | | | | | | | | | | | - 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> Acked-by: Adam Radford <linuxraid@amcc.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [PATCH] mark struct file_operations const 6Arjan van de Ven2007-02-12
| | | | | | | | | | | 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>
* [SCSI] 3ware 9000 add support for 9650SEadam radford2006-11-09
| | | | | | | | | | | Updates the 3ware 9000 driver: - Free irq handler in __twa_shutdown(). - Serialize reset code. - Add support for 9650SE controllers. Signed-off-by: Adam Radford <linuxraid@amcc.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* IRQ: Maintain regs pointer globally rather than passing to IRQ handlersDavid Howells2006-10-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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)
* [SCSI] pci_module_init conversion in scsi subsystemHenrik Kretzschmar2006-09-26
| | | | | | | | | Converts pci_module_init() to pci_register_driver() in the scsi subsys on 23 drivers which only return the value of pci_module_init(). Signed-off-by: Henrik Kretzschmar <henne@nachtwindheim.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [PATCH] irq-flags: scsi: Use the new IRQF_ constantsThomas Gleixner2006-07-02
| | | | | | | | | | Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: "David S. Miller" <davem@davemloft.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: James Bottomley <James.Bottomley@steeleye.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [SCSI] fix up request buffer reference in various scsi driversChristoph Hellwig2006-06-06
| | | | | | | | | | | | Various scsi drivers use scsi_cmnd.buffer and scsi_cmnd.bufflen in their queuecommand functions. Those fields are internal storage for the midlayer only and are used to restore the original payload after request_buffer and request_bufflen have been overwritten for EH. Using the buffer and bufflen fields means they do very broken things in error handling. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] 3ware 9000 disable local irqs during kmap_atomicadam radford2006-04-13
| | | | | | | Equivalent of the same patch for the 3w-xxxx driver. Signed-off-by: Adam Radford <linuxraid@amcc.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [PATCH] Typo fixesAlexey Dobriyan2006-03-28
| | | | | | | | Fix a lot of typos. Eyeballed by jmc@ in OpenBSD. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [SCSI] 3ware 9000 add big endian supportadam radford2006-03-19
| | | | | | | | | | The attached patch updates the 3ware 9000 driver: - Fix 9550SX pchip reset timeout. - Add big endian support. Signed-off-by: Adam Radford <linuxraid@amcc.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] 3ware 9000 driver >4GB memory fixadam radford2006-02-05
| | | | | | | | | | | | | | The attached patch fixes a bug in the 3ware 9000 series driver: - Fix use_sg == 0 mapping on systems with 4GB or higher. This fixes REPORT_LUNS (0xa0) failing with 3ware 9000 controllers on systems with lots of ram, mentioned in bugzilla # 6009: http://bugzilla.kernel.org/show_bug.cgi?id=6009 Signed-off-by: Adam Radford <linuxraid@amcc.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] sem2mutex 3w-[x9]xxxJes Sorensen2006-01-14
| | | | | | | | Convert a the 3w-9xxx.c and 3w-xxxx.c drivers to use mutexes instead of semaphores. Untested, but compiles and looks obviously correct. Signed-off-by: Jes Sorensen <jes@sgi.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [PATCH] kfree cleanup: drivers/scsiJesper Juhl2005-11-07
| | | | | | | | | | | | This is the drivers/scsi/ part of the big kfree cleanup patch. Remove pointless checks for NULL prior to calling kfree() in drivers/scsi/. Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Cc: James Bottomley <James.Bottomley@steeleye.com> Acked-by: Kai Makisara <kai.makisara@kolumbus.fi> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [SCSI] use sfoo_printk() in driversJeff Garzik2005-10-28
| | | | | Rejections fixed up and Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] 3ware 9000: Add support for 9550SX controllersadam radford2005-09-25
| | | | | Signed-off-by: Adam Radford <linuxraid@amcc.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] 3ware 9000: handle use_sg != 0 for emulated commandsadam radford2005-09-09
| | | | | | | | | | | | | | | | The attached patch updates the driver for the 3ware 9000 series to do the following: - Correctly handle single sgl's with use_sg = 1. This is needed with the latest scsi-block-2.6 merge otherwise the 3w-9xxx driver will not work. I tested the patch James sent a few weeks back to fix this, and it had a bug where the request_buffer was accessed in twa_scsiop_execute_scsi_complete() when it was invalid. This is a corrected variation of that patch. Signed-off-by: Adam Radford <linuxraid@amcc.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [PATCH] PCI: make drivers use the pci shutdown callback instead of the ↵Greg Kroah-Hartman2005-06-28
| | | | | | | | | driver core callback. Now we can change the pci core to always set this pointer, as pci drivers should use it, not the driver core callback. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [SCSI] allow sleeping in ->eh_host_reset_handler()Jeff Garzik2005-06-17
| | | | Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* Linux-2.6.12-rc2v2.6.12-rc2Linus Torvalds2005-04-16
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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