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* | [PATCH] Driver core: pass interface to class interface methodsDmitry Torokhov2005-10-28
|/ | | | | | | | | | | Driver core: pass interface to class intreface methods Pass interface as argument to add() and remove() class interface methods. This way a subsystem can implement generic add/remove handlers and then call interface-specific ones. Signed-off-by: Dmitry Torokhov <dtor@mail.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] proc_mkdir() should be used to create procfs directoriesAl Viro2005-09-29
| | | | | | | | A bunch of create_proc_dir_entry() calls creating directories had crept in since the last sweep; converted to proc_mkdir(). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [SCSI] fix oops on usb storage device disconnectJames Bottomley2005-09-19
| | | | | | | | | We fix the oops by enforcing the host state model. There have also been two extra states added: SHOST_CANCEL_RECOVERY and SHOST_DEL_RECOVERY so we can take the model through host removal while the recovery thread is active. Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] sg: do not set VM_IO flag on mmap-ed pagesDouglas Gilbert2005-09-09
| | | | | | | | | | | | | | | | | | | | | | | | | Further to the problem discussed in this post: http://marc.theaimsgroup.com/?l=linux-scsi&m=112540053711489&w=2 It seems that the sg driver does not need to set the VM_IO flag on pages that it memory maps to the user space since they are not from the IO space. Ahmed Teirelbar <ahmed.teirelbar@adic.com> wants the facility and has tested this patch as I have without adverse effects. The oops protection is still important. Some users really did try and use dio transfers from the sg driver to memory mapped IO space (on a video capture card if my memory serves) during the lk 2.4 series. I'm not sure how successful it was but that will now be politely refused in lk 2.6.13+ . Changelog: - set the page flags for sg's reserved buffer mmap-ed to the user space to VM_RESERVED (rather than VM_RESERVED | VM_IO ) Signed-off-by: Douglas Gilbert <dougg@torque.net> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* Merge by hand (conflicts in sd.c)James Bottomley2005-09-06
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| * [SCSI] sg direct io/mmap oops, st syncDouglas Gilbert2005-09-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adopts the same solution as proposed by Kai M. in a post titled: "[PATCH] SCSI tape signed/unsigned fix". The fix is in a function that the sg driver borrowed from the st driver so its maintenance is a little easier if the functions remain the same after the fix. - change nr_pages type from unsigned to signed so errors from get_user_pages() call are properly handled Signed-off-by: Douglas Gilbert <dougg@torque.net> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* | Merge HEAD from ../scsi-misc-2.6-tmp James Bottomley2005-08-28
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| * [SCSI] host state model update: replace old host bitmap stateMike Anderson2005-07-30
| | | | | | | | | | | | | | | | | | | | | | Migrate the current SCSI host state model to a model like SCSI device is using. Signed-off-by: Mike Anderson <andmike@us.ibm.com> Rejections fixed up and Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* | [PATCH] sg.c: fix a memory leak in devices seq_file implementationJan Blunck2005-08-27
|/ | | | | | | | | | | | | | | | | | | | | | | | I know that scsi procfs is legacy code but this is a fix for a memory leak. While reading through sg.c I realized that the implementation of /proc/scsi/sg/devices with seq_file is leaking memory due to freeing the pointer returned by the next() iterator method. Since next() might return NULL or an error this is wrong. This patch fixes it through using the seq_files private field for holding the reference to the iterator object. Here is a small bash script to trigger the leak. Use slabtop to watch the size-32 usage grow and grow. #!/bin/sh while true; do cat /proc/scsi/sg/devices > /dev/null done Signed-off-by: Jan Blunck <j.blunck@tu-harburg.de> Acked-by: James Bottomley <James.Bottomley@steeleye.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] class: convert drivers/scsi/* to use the new class api instead of ↵gregkh@suse.de2005-06-20
| | | | | | class_simple Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [SCSI] sg: Command completion after remove oopsbrking@us.ibm.com2005-06-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A problem exists todayin the sg driver that if an SG_IO request is outstanding to a device when it is removed from the system. The system may oops if that command completes later in time. 1. sg_remove gets called 2. sg_remove calls sg_finish_req_req on all pending requests This removes the Sg_request's from the headrp list in the Sg_fd 3. The sleeping SG_IO ioctl is woken. It does nothing and returns. 4. The caller closes the fd, which invokes sg_release 5. sg_release calls sg_remove_sfp. It finds no outstanding commands since the headrp list is empty, so it calls __sg_remove_sfp, which frees the sfp. 6. Now when sg_cmd_done gets called, sg uses upper_private_data in the Scsi_Request, which should point to the srp, which has been freed, so it points to freed memory. 7. sg then dereferences the srp pointer to get the sfp, and we oops. The fix is to NULL out the upper_private_data field in this path, which sg_cmd_done already checks for, which will prevent the oops from occurring. cpu 0x1: Vector: 300 (Data Access) at [c00000000fff7aa0] pc: d0000000002bbea8: .sg_cmd_done+0x70/0x394 [sg] lr: d000000000073304: .scsi_finish_command+0x10c/0x130 [scsi_mod] sp: c00000000fff7d20 msr: 8000000000009032 dar: 2f70726f63202f78 dsisr: 40000000 current = 0xc0000000024589b0 paca = 0xc0000000003da800 pid = 7, comm = events/1 [c00000000fff7dc0] d000000000073304 .scsi_finish_command+0x10c/0x130 [scsi_mod] [c00000000fff7e50] d00000000007317c .scsi_softirq+0x140/0x168 [scsi_mod] [c00000000fff7ef0] c0000000000634dc .__do_softirq+0xa0/0x17c [c00000000fff7f90] c000000000018430 .call_do_softirq+0x14/0x24 [c00000000ed472e0] c0000000000142e0 .do_softirq+0x74/0x9c [c00000000ed47370] c000000000013c9c .do_IRQ+0xe8/0x100 [c00000000ed473f0] c00000000000ae34 HardwareInterrupt_entry+0x8/0x54 c00000000003df28 .smp_call_function+0 x100/0x1d0 [c00000000ed47780] c0000000000ba99c .invalidate_bh_lrus+0x30/0x70 [c00000000ed47810] c0000000000b91a0 .invalidate_bdev+0x18/0x3c [c00000000ed478a0] c0000000000da7b8 .__invalidate_device+0x70/0x94 [c00000000ed47930] c0000000001d40bc .invalidate_partition+0x4c/0x7c [c00000000ed479c0] c00000000010a944 .del_gendisk+0x48/0x15c [c00000000ed47a50] d00000000003d55c .sd_remove+0x34/0xe4 [sd_mod] [c00000000ed47ae0] c0000000001c5d30 .device_release_driver+0x90/0xb4 [c00000000ed47b70] c0000000001c6130 .bus_remove_device+0xb0/0x12c [c00000000ed47c00] c0000000001c4378 .device_del+0x120/0x198 [c00000000ed47ca0] d00000000007dcdc .scsi_remove_device+0xb4/0x194 [scsi_mod] [c00000000ed47d30] d0000000000a5864 .ipr_worker_thread+0x1d4/0x27c [ipr] [c00000000ed47dd0] c0000000000734c4 .worker_thread+0x238/0x2f4 [c00000000ed47ee0] c0000000000796c0 .kthread+0xcc/0x11c [c00000000ed47f90] c000000000018ad0 .kernel_thread+0x4c/0x6c Signed-off-by: Brian King <brking@us.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [PATCH] remove old scsi data direction macros2005-04-18
| | | | | | | | | | these have been wrappers for the generic dma direction bits since 2.5.x. This patch converts the few remaining drivers and removes the macros. Arjan noticed there's some hunk in here that shouldn't. Updated patch below: Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* merge by hand (scsi_device.h)James Bottomley2005-04-18
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| * [PATCH] remove outdated print_* functions2005-04-18
| | | | | | | | | | | | | | We have the scsi_print_* functions in the proper namespace for a long time now and there weren't a lot users left. Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* | [PATCH] sg.c: update2005-04-16
|/ | | | | | | | | | | | | | | | | | | | | The attachment combines the most recent patch from Yum Rayan <yum.rayan@gmail.com> (to reduce sg stack usage), Adrian Bunk <bunk@stusta.de> (to fix check after use) and me (fix elapsed time calculation (duration) on ia64 machines). I have modified the patch from Yum Rayan so kmalloc() in sg_read() is only called for the (rare) code paths that need them. Changelog: - reduce stack usage in sg_ioctl() and sg_read() - fix check after use in sg_mmap() - hold duration internally in milliseconds and check current time later than held time Signed-off-by: Douglas Gilbert <dougg@torque.net> 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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