kernel.git/drivers/scsi/st.c, branch linux-3.8.y

[SCSI] st: remove st_mutex

2012-09-24T09:07:02Z

The st_mutex was created when the BKL was removed, and prevents simultaneous st_open calls. It is better to protect just the necessary data. Signed-off-by: Hannes Reinecke Signed-off-by: Lee Duncan Acked-by: Kai Mäkisara Signed-off-by: James Bottomley

[SCSI] st: clean up device file creation and removal

2012-09-14T16:59:29Z

This patch cleans up the st device file creation and removal. Reviewed-by: Lee Duncan Signed-off-by: Jeff Mahoney Acked-by: Kai Mäkisara Signed-off-by: James Bottomley

[SCSI] st: get rid of scsi_tapes array

2012-09-14T16:59:28Z

st currently allocates an array to store pointers to all of the scsi_tape objects. It's used to discover available indexes to use as the base for the minor number selection and later to look up scsi_tape devices for character devices. We switch to using an IDR for minor selection and a pointer from st_modedef back to scsi_tape for the lookups. Reviewed-by: Lee Duncan Signed-off-by: Jeff Mahoney Acked-by: Kai Mäkisara Signed-off-by: James Bottomley

[SCSI] st: clean up dev cleanup in st_probe

2012-09-14T16:59:28Z

st_probe leaves a cdev pointer hanging around that is compared during the error path and freed later. There's no need for the pointer to hang around at all. So we free it immediately and simplify the error handling. Reviewed-by: Lee Duncan Signed-off-by: Jeff Mahoney Acked-by: Kai Mäkisara Signed-off-by: James Bottomley

[SCSI] st: Use static class attributes

2012-09-14T16:59:28Z

st currently sets up and tears down class attributes manually for every tape drive in the system. This patch uses a statically defined class with class attributes to let the device core do it for us. Reviewed-by: Lee Duncan Signed-off-by: Jeff Mahoney Acked-by: Kai Mäkisara Signed-off-by: James Bottomley

Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6

2012-03-31T20:31:23Z

Pull SCSI updates from James Bottomley: "This is primarily another round of driver updates (lpfc, bfa, fcoe, ipr) plus a new ufshcd driver. There shouldn't be anything controversial in here (The final deletion of scsi proc_ops which caused some build breakage has been held over until the next merge window to give us more time to stabilise it). I'm afraid, with me moving continents at exactly the wrong time, anything submitted after the merge window opened has been held over to the next merge window." * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (63 commits) [SCSI] ipr: Driver version 2.5.3 [SCSI] ipr: Increase alignment boundary of command blocks [SCSI] ipr: Increase max concurrent oustanding commands [SCSI] ipr: Remove unnecessary memory barriers [SCSI] ipr: Remove unnecessary interrupt clearing on new adapters [SCSI] ipr: Fix target id allocation re-use problem [SCSI] atp870u, mpt2sas, qla4xxx use pci_dev->revision [SCSI] fcoe: Drop the rtnl_mutex before calling fcoe_ctlr_link_up [SCSI] bfa: Update the driver version to 3.0.23.0 [SCSI] bfa: BSG and User interface fixes. [SCSI] bfa: Fix to avoid vport delete hang on request queue full scenario. [SCSI] bfa: Move service parameter programming logic into firmware. [SCSI] bfa: Revised Fabric Assigned Address(FAA) feature implementation. [SCSI] bfa: Flash controller IOC pll init fixes. [SCSI] bfa: Serialize the IOC hw semaphore unlock logic. [SCSI] bfa: Modify ISR to process pending completions [SCSI] bfa: Add fc host issue lip support [SCSI] mpt2sas: remove extraneous sas_log_info messages [SCSI] libfc: fcoe_transport_create fails in single-CPU environment [SCSI] fcoe: reduce contention for fcoe_rx_list lock [v2] ...

Remove all #inclusions of asm/system.h

2012-03-28T17:30:03Z

Remove all #inclusions of asm/system.h preparatory to splitting and killing it. Performed with the following command: perl -p -i -e 's!^#\s*include\s*.*\n!!' `grep -Irl '^#\s*include\s*' *` Signed-off-by: David Howells

[SCSI] st: expand ability to write immediate filemarks

2012-03-27T07:26:34Z

The st tape driver recently added the MTWEOFI ioctl, which writes a tape filemark (EOF), like the MTWEOF ioctl, except that MTWEOFI returns immediately. This makes certain applications, like backup software, run much more quickly on buffered tape drives. Since legacy applications do not know about this new MTWEOFI ioctl, this patch adds a new ioctl option that tells the st driver to return immediately when writing an EOF (i.e. a filemark). This new flag is much like the existing flag that tells the st driver to perform writes (and certain other IOs) immediately, but this new flag only applies to writing EOFs. This new feature is controlled via the MTSETDRVBUFFER ioctl, using the newly-defined MT_ST_NOWAIT_EOF flag. Use of this new feature is displayed via the sysfs tape "options" attribute. The st documentation was updated to mention this new flag, as well as the problems that can occur from using it. Signed-off-by: Lee Duncan Acked-by: Kai Makisara Signed-off-by: James Bottomley

[SCSI] st: implement PM

2012-02-19T14:08:51Z

This implements basic power management for SCSI tapes. Signed-off-by: Oliver Neukum Acked-by: Kai Mäkisara Signed-off-by: James Bottomley

[SCSI] st: fix race in st_scsi_execute_end

2011-10-30T09:27:28Z

The call to complete() in st_scsi_execute_end() wakes up sleeping thread in write_behind_check(), which frees the st_request, thus invalidating the pointer to the associated bio structure, which is then passed to the blk_rq_unmap_user(). Fix by storing pointer to bio structure into temporary local variable. This bug is present since at least linux-2.6.32. CC: stable@kernel.org Signed-off-by: Petr Uzel Reported-by: Juergen Groß Reviewed-by: Jan Kara Acked-by: Kai Mäkisara Signed-off-by: James Bottomley