aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/scsi/sr.c
Commit message (Collapse)AuthorAgeFilesLines
* [SCSI] sr: fix corrupt CD data after media change and delayJames Bottomley2008-06-101-0/+3
| | | | | | | | | | | | | | | | | | | Reported-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> If you delay 30s or more before mounting a CD after inserting it then the kernel has the wrong value for the CD size. http://marc.info/?t=121276133000001 The problem is in sr_test_unit_ready(): the function eats unit attentions without adjusting the sdev->changed status. This means that when the CD signals changed media via unit attention, we can ignore it. Fix by making sr_test_unit_ready() adjust the changed status. Tested-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Cc: Stable Tree <stable@kernel.org> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] sd, sr: do not emit change event at device addKay Sievers2008-03-191-0/+1
| | | | | | | | Initialize the "state changed" flag, so we do not send a change event immediately after registering a new device. Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] sr: fix test unit ready responsesJames Bottomley2008-02-071-22/+27
| | | | | | | | | | | | Commit 210ba1d1724f5c4ed87a2ab1a21ca861a915f734 updated sr.c to use the scsi_test_unit_ready() function. Unfortunately, this has the wrong characteristic of eating NOT_READY returns which sr.c relies on for tray status. Fix by rolling an internal sr_test_unit_ready() that doesn't do this. Tested-by: Daniel Drake <dsd@gentoo.org> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] implement scsi_data_bufferBoaz Harrosh2008-01-301-12/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In preparation for bidi we abstract all IO members of scsi_cmnd, that will need to duplicate, into a substructure. - Group all IO members of scsi_cmnd into a scsi_data_buffer structure. - Adjust accessors to new members. - scsi_{alloc,free}_sgtable receive a scsi_data_buffer instead of scsi_cmnd. And work on it. - Adjust scsi_init_io() and scsi_release_buffers() for above change. - Fix other parts of scsi_lib/scsi.c to members migration. Use accessors where appropriate. - fix Documentation about scsi_cmnd in scsi_host.h - scsi_error.c * Changed needed members of struct scsi_eh_save. * Careful considerations in scsi_eh_prep/restore_cmnd. - sd.c and sr.c * sd and sr would adjust IO size to align on device's block size so code needs to change once we move to scsi_data_buff implementation. * Convert code to use scsi_for_each_sg * Use data accessors where appropriate. - tgt: convert libsrp to use scsi_data_buffer - isd200: This driver still bangs on scsi_cmnd IO members, so need changing [jejb: rebased on top of sg_table patches fixed up conflicts and used the synergy to eliminate use_sg and sg_count] Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] sr: update to follow tray status correctlyJames Bottomley2008-01-111-2/+0
| | | | | | | | | | | | | | Based on an original patch from: David Martin <tasio@tasio.net> When trying to get the drive status via ioctl CDROM_DRIVE_STATUS, with no disk it gives CDS_TRAY_OPEN even if the tray is closed. ioctl works as expected with ide-cd driver. Gentoo bug report: http://bugs.gentoo.org/show_bug.cgi?id=196879 Cc: Maarten Bressers <mbres@gentoo.org> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] sd,sr: add early detection of medium not presentJames Bottomley2008-01-111-6/+13
| | | | | | | | | The current scsi_test_unit_ready() is updated to return sense code information (in struct scsi_sense_hdr). The sd and sr drivers are changed to interpret the sense code return asc 0x3a as no media and adjust the device status accordingly. Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] sr,sd: send media state change modification eventsKay Sievers2008-01-111-3/+11
| | | | | | | | | | | | | | | | | | | | | | | This will send for a card reader slot (remove/add media): UEVENT[1187091572.155884] change /devices/pci0000:00/0000:00:1d.7/usb5/5-2/5-2:1.0/host7/target7:0:0/7:0:0:0 (scsi) UEVENT[1187091572.162314] remove /block/sdb/sdb1 (block) UEVENT[1187091572.172464] add /block/sdb/sdb1 (block) UEVENT[1187091572.175408] change /devices/pci0000:00/0000:00:1d.7/usb5/5-2/5-2:1.0/host7/target7:0:0/7:0:0:0 (scsi) and for a DVD drive (add/eject media): UEVENT[1187091590.189159] change /devices/pci0000:00/0000:00:1f.1/host4/target4:0:0/4:0:0:0 (scsi) UEVENT[1187091590.957124] add /module/isofs (module) UEVENT[1187091604.468207] change /devices/pci0000:00/0000:00:1f.1/host4/target4:0:0/4:0:0:0 (scsi) Userspace gets events, even for unpartitioned media. This unifies the event handling for asynchronoous events (AN) and events caused by perodical polling the device from userspace. Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> [jejb: modified for new event API] Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* Revert "scsi: revert "[SCSI] Get rid of scsi_cmnd->done""Linus Torvalds2008-01-061-15/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit ac40532ef0b8649e6f7f83859ea0de1c4ed08a19, which gets us back the original cleanup of 6f5391c283d7fdcf24bf40786ea79061919d1e1d. It turns out that the bug that was triggered by that commit was apparently not actually triggered by that commit at all, and just the testing conditions had changed enough to make it appear to be due to it. The real problem seems to have been found by Peter Osterlund: "pktcdvd sets it [block device size] when opening the /dev/pktcdvd device, but when the drive is later opened as /dev/scd0, there is nothing that sets it back. (Btw, 40944 is possible if the disk is a CDRW that was formatted with "cdrwtool -m 10236".) The problem is that pktcdvd opens the cd device in non-blocking mode when pktsetup is run, and doesn't close it again until pktsetup -d is run. The effect is that if you meanwhile open the cd device, blkdev.c:do_open() doesn't call bd_set_size() because bdev->bd_openers is non-zero." In particular, to repeat the bug (regardless of whether commit 6f5391c283d7fdcf24bf40786ea79061919d1e1d is applied or not): " 1. Start with an empty drive. 2. pktsetup 0 /dev/scd0 3. Insert a CD containing an isofs filesystem. 4. mount /dev/pktcdvd/0 /mnt/tmp 5. umount /mnt/tmp 6. Press the eject button. 7. Insert a DVD containing a non-writable filesystem. 8. mount /dev/scd0 /mnt/tmp 9. find /mnt/tmp -type f -print0 | xargs -0 sha1sum >/dev/null 10. If the DVD contains data beyond the physical size of a CD, you get I/O errors in the terminal, and dmesg reports lots of "attempt to access beyond end of device" errors." which in turn is because the nested open after the media change won't cause the size to be set properly (because the original open still holds the block device, and we only do the bd_set_size() when we don't have other people holding the device open). The proper fix for that is probably to just do something like bdev->bd_inode->i_size = (loff_t)get_capacity(disk)<<9; in fs/block_dev.c:do_open() even for the cases where we're not the original opener (but *not* call bd_set_size(), since that will also change the block size of the device). Cc: Peter Osterlund <petero2@telia.com> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Cc: Matthew Wilcox <matthew@wil.cx> Cc: Ingo Molnar <mingo@elte.hu> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* scsi: revert "[SCSI] Get rid of scsi_cmnd->done"Ingo Molnar2008-01-021-6/+15
| | | | | | | | | | | | | | | | | This reverts commit 6f5391c283d7fdcf24bf40786ea79061919d1e1d ("[SCSI] Get rid of scsi_cmnd->done") that was supposed to be a cleanup commit, but apparently it causes regressions: Bug 9370 - v2.6.24-rc2-409-g9418d5d: attempt to access beyond end of device http://bugzilla.kernel.org/show_bug.cgi?id=9370 this patch should be reintroduced in a more split-up form to make testing of it easier. Signed-off-by: Ingo Molnar <mingo@elte.hu> Acked-by: Matthew Wilcox <matthew@wil.cx> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [SCSI] Get rid of scsi_cmnd->doneMatthew Wilcox2007-10-121-15/+6
| | | | | | | | | | | | | | | The ULD ->done callback moves into the scsi_driver. By moving the call to scsi_io_completion() from scsi_blk_pc_done() to scsi_finish_command(), we can eliminate the latter entirely. By returning 'good_bytes' from the ->done callback (rather than invoking scsi_io_completion()), we can stop exporting scsi_io_completion(). Also move the prototypes from sd.h to sd.c as they're all internal anyway. Rename sd_rw_intr to sd_done and rw_intr to sr_done. Inspired-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] move ULD attachment into the prep functionJames Bottomley2007-10-121-19/+40
| | | | | | | | | | | | | | | One of the intents of the block prep function was to allow ULDs to use it for preprocessing. The original SCSI model was to have a single prep function and add a pointer indirect filter to build the necessary commands. This patch reverses that, does away with the init_command field of the scsi_driver structure and makes ULDs attach directly to the prep function instead. The value is really that it allows us to begin to separate the ULDs from the SCSI mid layer (as long as they don't use any core functions---which is hard at the moment---a ULD doesn't even need SCSI to bind). Acked-by: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [BLOCK] Get rid of request_queue_t typedefJens Axboe2007-07-241-1/+1
| | | | | | | | | Some of the code has been gradually transitioned to using the proper struct request_queue, but there's lots left. So do a full sweet of the kernel and get rid of this typedef and replace its uses with the proper type. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* [SCSI] small cleanupsAdrian Bunk2007-07-181-1/+1
| | | | | | | | | | | This patch contains the following cleanups: - make needlessly global functions static - every file should #include the headers containing the prototypes for it's global functions Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] sr: fix error handling in module_initAkinobu Mita2007-07-141-1/+5
| | | | | | | | Sweep registered blkdev when scsi_register_driver has failed. Cc: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] modalias for scsi devicesMichael Tokarev2007-04-171-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The following patch adds support for sysfs/uevent modalias attribute for scsi devices (like disks, tapes, cdroms etc), based on whatever current sd.c, sr.c, st.c and osst.c drivers supports. The modalias format is like this: scsi:type-0x04 (for TYPE_WORM, handled by sr.c now). Several comments. o This hexadecimal type value is because all TYPE_XXX constants in include/scsi/scsi.h are given in hex, but __stringify() will not convert them to decimal (so it will NOT be scsi:type-4). Since it does not really matter in which format it is, while both modalias in module and modalias attribute match each other, I descided to go for that 0x%02x format (and added a comment in include/scsi/scsi.h to keep them that way), instead of changing them all to decimal. o There was no .uevent routine for SCSI bus. It might be a good idea to add some more ueven environment variables in there. o osst.c driver handles tapes too, like st.c, but only SOME tapes. With this setup, hotplug scripts (or whatever is used by the user) will try to load both st and osst modules for all SCSI tapes found, because both modules have scsi:type-0x01 alias). It is not harmful, but one extra module is no good either. It is possible to solve this, by exporting more info in modalias attribute, including vendor and device identification strings, so that modalias becomes something like scsi:type-0x12:vendor-Adaptec LTD:device-OnStream Tape Drive and having that, match for all 3 attributes, not only device type. But oh well, vendor and device strings may be large, and they do contain spaces and whatnot. So I left them for now, awaiting for comments first. Signed-off-by: Michael Tokarev <mjt@tls.msk.ru> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [PATCH] remove many unneeded #includes of sched.hTim Schmielau2007-02-141-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | After Al Viro (finally) succeeded in removing the sched.h #include in module.h recently, it makes sense again to remove other superfluous sched.h includes. There are quite a lot of files which include it but don't actually need anything defined in there. Presumably these includes were once needed for macros that used to live in sched.h, but moved to other header files in the course of cleaning it up. To ease the pain, this time I did not fiddle with any header files and only removed #includes from .c-files, which tend to cause less trouble. Compile tested against 2.6.20-rc2 and 2.6.20-rc2-mm2 (with offsets) on alpha, arm, i386, ia64, mips, powerpc, and x86_64 with allnoconfig, defconfig, allmodconfig, and allyesconfig as well as a few randconfigs on x86_64 and all configs in arch/arm/configs on arm. I also checked that no new warnings were introduced by the patch (actually, some warnings are removed that were emitted by unnecessarily included header files). Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [SCSI] sr: fix error code check in sr_block_ioctl()Tejun Heo2007-01-061-1/+1
| | | | | | | | | | sr_block_ioctl() should proceed to SCSI ioctls if cdrom_ioctl() returns -ENOSYS. However it tested for ENOSYS instead of -ENOSYS rendering all SCSI ioctls other than GET_IDLUN and GET_BUS_NUMBER inaccessible. Fix it. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] hide EH backup data outside the scsi_cmndChristoph Hellwig2006-07-091-3/+2
| | | | | | | | | | | | | | | | | Currently struct scsi_cmnd has various fields that are used to backup original data after the corresponding fields have been overridden for EH commands. This means drivers can easily get at it and misuse it. Due to the old_ naming this doesn't happen for most of them, but two that have different names have been used wrong a lot (see previous patch). Another downside is that they unessecarily bloat the scsi_cmnd size. This patch moves them onstack in scsi_send_eh_cmnd to fix those two issues aswell as allowing future EH fixes like moving the EH command submissions to use SG lists like everything else. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] sd/scsi_lib simplify sd_rw_intr and scsi_io_completionLuben Tuikov2006-06-261-1/+1
| | | | | | | | | | | | | | | | | | | This patch simplifies "good_bytes" computation in sd_rw_intr(). sd: "good_bytes" computation is always done in terms of the resolution of the device's medium, since after that it is the number of good bytes we pass around and other layers/contexts (as opposed ot sd) can translate that to their own resolution (block layer:512). It also makes scsi_io_completion() processing more straightforward, eliminating the 3rd argument to the function. It also fixes a couple of bugs like not checking return value, using "break" instead of "return;", etc. I've been running with this patch for some time now on a test (do-it-all) system. Signed-off-by: Luben Tuikov <ltuikov@yahoo.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] fix up request buffer reference in various scsi driversChristoph Hellwig2006-06-061-1/+1
| | | | | | | | | | | | 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>
* [PATCH] kill cdrom ->dev_ioctl methodChristoph Hellwig2006-03-231-11/+26
| | | | | | | | | | | Since early 2.4.x all cdrom drivers implement the block_device methods themselves, so they can handle additional ioctls directly instead of going through the cdrom layer. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Jens Axboe <axboe@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [SCSI] MODULE_ALIAS_{BLOCK,CHAR}DEV_MAJOR for drivers/scsiRene Herman2006-03-121-0/+4
| | | | | | | | | | | | | | Add device-major aliases in drivers/scsi, allowing kmod autoload: MODULE_ALIAS_CHARDEV_MAJOR(SCSI_CHANGER_MAJOR) MODULE_ALIAS_CHARDEV_MAJOR(OSST_MAJOR) MODULE_ALIAS_CHARDEV_MAJOR(SCSI_TAPE_MAJOR) MODULE_ALIAS_BLOCKDEV_MAJOR(SCSI_CDROM_MAJOR) MODULE_ALIAS_BLOCKDEV_MAJOR(SCSI_DISKN_MAJOR) Signed-off-by: Andrew Morton <akpm@osdl.org> Acked-by: Kai Makisara <kai.makisara@kolumbus.fi> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] Remove devfs support from the SCSI subsystemGreg KH2006-02-271-2/+0
| | | | | | | | | | | | As devfs has been disabled from the kernel tree for a number of months now (5 to be exact), here's a patch against 2.6.16-rc1-git1 that removes support for it from the SCSI subsystem. The patch also removes the scsi_disk devfs_name field as it's no longer needed. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] SCSI core kmalloc2kzallocJes Sorensen2006-02-271-2/+1
| | | | | | | | Change the core SCSI code to use kzalloc rather than kmalloc+memset where possible. Signed-off-by: Jes Sorensen <jes@sgi.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [PATCH] Unlinline a bunch of other functionsArjan van de Ven2006-01-141-1/+1
| | | | | | | | | | | Remove the "inline" keyword from a bunch of big functions in the kernel with the goal of shrinking it by 30kb to 40kb Signed-off-by: Arjan van de Ven <arjan@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Acked-by: Jeff Garzik <jgarzik@pobox.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [SCSI] always handle REQ_BLOCK_PC requests in common codeChristoph Hellwig2006-01-141-21/+0
| | | | | | | | | | | | | | LLDDs should never see REQ_BLOCK_PC requests, we can handle them just fine in the core code. There is a small behaviour change in that some check in sr's rw_intr are bypassed, but I consider the old behaviour a bug. Mike found this cleanup opportunity and provdided early patches, so all the credit goes to him, even if I redid the patches from scratch beause that was easier than forward-porting the old patches. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] Mask capabilities for SCSI-1 CD driveChuck Ebbert2006-01-121-2/+3
| | | | | | | | | SCSI-1 CD drives can't do MRW or be opened for writing, so mask off those capabilities. Signed-off-by: Chuck Ebbert <76306.1226@compuserve.com> Acked-by: Jens Axboe <axboe@suse.de> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] turn most scsi semaphores into mutexesArjan van de Ven2006-01-121-8/+9
| | | | | | | | the scsi layer is using semaphores in a mutex way, this patch converts these into using mutexes instead Signed-off-by: Arjan van de Ven <arjan@infradead.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* Fix up SCSI mismergeJames Bottomley2005-12-151-1/+1
| | | | I forgot to do a git-update-cache on the merged files ...
* Merge by hand (conflicts in scsi_lib.c)James Bottomley2005-12-151-17/+3
|\ | | | | | | | | | | | | | | This merge is pretty extensive. The conflict is over the new req->retries parameter, so I had to change the prototype to scsi_setup_blk_pc_cmnd() and the usage in sd, sr and st. Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| * [SCSI] Consolidate REQ_BLOCK_PC handling path (fix ipod panic)James Bottomley2005-12-131-17/+3
| | | | | | | | | | | | | | | | This follows on from Jens' patch and consolidates all of the ULD separate handlers for REQ_BLOCK_PC into a single call which has his fix for our direction bug. Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* | [SCSI] Mark some core scsi data structures constArjan van de Ven2005-12-131-1/+1
|/ | | | | | | | patch below marks a few scsi core datastructures as const, so that they end up in the .rodata section and don't cacheline share with things that get dirtied Signed-off-by: Arjan van de Ven <arjan@infradead.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] use {sdev,scmd,starget,shost}_printk in generic codeJeff Garzik2005-10-281-5/+5
| | | | | rejections fixed and Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] sr: remove dead codeJayachandran C2005-10-281-1/+1
| | | | | | | | | | | | This patch fixes an issue reported in drivers/scsi/sr.c by Coverity Error reported: Pointer returned from "scsi_cd" is never used Patch description: Remove the scsi_cd() call as it does not have any effect. Signed-off-by: Jayachandran C. <c.jayachandran@gmail.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] move the mid-layer printk's over to shost/starget/sdev_printkJames Bottomley2005-10-281-8/+7
| | | | | | | | | This should eliminate (at least in the mid layer) to make numeric assumptions about any of the enumeration variables. As a side effect, it will also make all the messages consistent and line us up nicely for the error logging strategy (if it ever shows itself again). Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] scsi: sd, sr, st, and scsi_lib all fail to copy cmd_len to new cmdTimothy Thelin2005-09-141-0/+1
| | | | | | | | | This fixes an issue in scsi command initialization from a request where sd, sr, st, and scsi_lib all fail to copy the request's cmd_len to the scsi command's cmd_len field. Signed-off-by: Timothy Thelin <timothy.thelin@wdc.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* Merge by hand (conflicts in sr.c)James Bottomley2005-08-281-22/+2
|\
| * [SCSI] sr.c: Fix getting wrong sizePete Zaitcev2005-08-281-22/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Here's the problem. Try to do this on 2.6.12: - Kill udev and HAL - Insert a CD-ROM into a SCSI or USB CD-ROM drive - Run dd if=/dev/scd0 - cat /sys/block/sr0/size - Eject the CD, insert a different one - Run dd if=/dev/scd0 This is likely to do "access beyond the end of device", if you let it - cat /sys/block/sr0/size This shows the size of a previous CD, even though dd was supposed to revalidate the device. - Run dd if=/dev/scd0 The second run of dd works correctly! The bug was introduced in 2.5.31, when Al fixes the recursive opens in partitioning. Before, the code worked like this: - Block layer called cdrom_open directly - cdrom_open called sr_open - sr_open called check_disk_change - check_disk_change called sr_media_change - sr_media_change did cd->needs_disk_change=1 - before returning sr_open tested cd->needs_disk_change and called get_sector_size. In 2.6.12, the check_disk_change is called from cdrom_open only. Thus: - Block layer calls sr_bd_open - sr_bd_open calls cdrom_open - cdrom_open calls sr_open - sr_open tests cd->needs_disk_change, which wasn't set yet; returns - cdrom_open calls check_disk_change - check_disk_change calls sr_media_change - sr_media_change does cd->needs_disk_change=1, but nobody cares Acked by: Alexander Viro <aviro@redhat.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* | [SCSI] convert sr to scsi_execute_reqJames Bottomley2005-08-281-39/+10
| | | | | | | | | | | | | | | | This follows almost the identical model to sd, except that there's one ioctl which returns raw sense data, so it had to use scsi_execute() instead. Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* | [SCSI] convert the remaining mid-layer pieces to scsi_execute_reqJames Bottomley2005-08-281-1/+1
|/ | | | | | | After this, we just have some drivers, all the ULDs and the SPI transport class using scsi_wait_req(). Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* Linux-2.6.12-rc2Linus Torvalds2005-04-161-0/+965
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!
generated by cgit v1.1 at 2024-11-01 01:00:14 +0000