From 2b9efba48283f34083df6bc53f6752fba4e4d409 Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Mon, 13 Oct 2008 21:39:31 +0200 Subject: ide: add pointer to the current packet command to ide_drive_t * Add pointer to the current packet command (struct ide_atapi_pc *pc) to ide_drive_t and use it instead of the pointer in struct ide_*_obj. * Use drive->pc in ide_{issue,transfer}_pc() and ide_pc_intr() instead of 'pc' argument. There should be no functional changes caused by this patch. Cc: Borislav Petkov Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/scsi/ide-scsi.c | 58 ++++++++++++++++++++++++------------------------- 1 file changed, 28 insertions(+), 30 deletions(-) (limited to 'drivers/scsi') diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c index b9bfec24e91..bb8b3b123c7 100644 --- a/drivers/scsi/ide-scsi.c +++ b/drivers/scsi/ide-scsi.c @@ -82,7 +82,6 @@ typedef struct ide_scsi_obj { struct gendisk *disk; struct Scsi_Host *host; - struct ide_atapi_pc *pc; /* Current packet command */ unsigned long transform; /* SCSI cmd translation layer */ unsigned long log; /* log flags */ } idescsi_scsi_t; @@ -140,7 +139,7 @@ static int idescsi_end_request(ide_drive_t *, int, int); static void ide_scsi_callback(ide_drive_t *drive, int dsc) { idescsi_scsi_t *scsi = drive_to_idescsi(drive); - struct ide_atapi_pc *pc = scsi->pc; + struct ide_atapi_pc *pc = drive->pc; if (pc->flags & PC_FLAG_TIMEDOUT) debug_log("%s: got timed out packet %lu at %lu\n", __func__, @@ -267,7 +266,7 @@ static int idescsi_end_request (ide_drive_t *drive, int uptodate, int nrsecs) spin_unlock_irqrestore(host->host_lock, flags); kfree(pc); blk_put_request(rq); - scsi->pc = NULL; + drive->pc = NULL; return 0; } @@ -278,8 +277,7 @@ static inline unsigned long get_timeout(struct ide_atapi_pc *pc) static int idescsi_expiry(ide_drive_t *drive) { - idescsi_scsi_t *scsi = drive_to_idescsi(drive); - struct ide_atapi_pc *pc = scsi->pc; + struct ide_atapi_pc *pc = drive->pc; debug_log("%s called for %lu at %lu\n", __func__, pc->scsi_cmd->serial_number, jiffies); @@ -294,19 +292,14 @@ static int idescsi_expiry(ide_drive_t *drive) */ static ide_startstop_t idescsi_pc_intr (ide_drive_t *drive) { - idescsi_scsi_t *scsi = drive_to_idescsi(drive); - struct ide_atapi_pc *pc = scsi->pc; - - return ide_pc_intr(drive, pc, idescsi_pc_intr, get_timeout(pc), + return ide_pc_intr(drive, idescsi_pc_intr, get_timeout(drive->pc), idescsi_expiry, NULL, NULL, ide_io_buffers); } static ide_startstop_t idescsi_transfer_pc(ide_drive_t *drive) { - idescsi_scsi_t *scsi = drive_to_idescsi(drive); - - return ide_transfer_pc(drive, scsi->pc, idescsi_pc_intr, - get_timeout(scsi->pc), idescsi_expiry); + return ide_transfer_pc(drive, idescsi_pc_intr, + get_timeout(drive->pc), idescsi_expiry); } static inline int idescsi_set_direction(struct ide_atapi_pc *pc) @@ -351,12 +344,10 @@ static int idescsi_map_sg(ide_drive_t *drive, struct ide_atapi_pc *pc) static ide_startstop_t idescsi_issue_pc(ide_drive_t *drive, struct ide_atapi_pc *pc) { - idescsi_scsi_t *scsi = drive_to_idescsi(drive); - /* Set the current packet command */ - scsi->pc = pc; + drive->pc = pc; - return ide_issue_pc(drive, pc, idescsi_transfer_pc, + return ide_issue_pc(drive, idescsi_transfer_pc, get_timeout(pc), idescsi_expiry); } @@ -621,6 +612,8 @@ static int idescsi_eh_abort (struct scsi_cmnd *cmd) int busy; int ret = FAILED; + struct ide_atapi_pc *pc; + /* In idescsi_eh_abort we try to gently pry our command from the ide subsystem */ if (test_bit(IDESCSI_LOG_CMD, &scsi->log)) @@ -641,26 +634,27 @@ static int idescsi_eh_abort (struct scsi_cmnd *cmd) spin_lock_irq(&ide_lock); /* If there is no pc running we're done (our interrupt took care of it) */ - if (!scsi->pc) { + pc = drive->pc; + if (pc == NULL) { ret = SUCCESS; goto ide_unlock; } /* It's somewhere in flight. Does ide subsystem agree? */ - if (scsi->pc->scsi_cmd->serial_number == cmd->serial_number && !busy && - elv_queue_empty(drive->queue) && HWGROUP(drive)->rq != scsi->pc->rq) { + if (pc->scsi_cmd->serial_number == cmd->serial_number && !busy && + elv_queue_empty(drive->queue) && HWGROUP(drive)->rq != pc->rq) { /* * FIXME - not sure this condition can ever occur */ printk (KERN_ERR "ide-scsi: cmd aborted!\n"); - if (blk_sense_request(scsi->pc->rq)) - kfree(scsi->pc->buf); + if (blk_sense_request(pc->rq)) + kfree(pc->buf); /* we need to call blk_put_request twice. */ - blk_put_request(scsi->pc->rq); - blk_put_request(scsi->pc->rq); - kfree(scsi->pc); - scsi->pc = NULL; + blk_put_request(pc->rq); + blk_put_request(pc->rq); + kfree(pc); + drive->pc = NULL; ret = SUCCESS; } @@ -682,6 +676,8 @@ static int idescsi_eh_reset (struct scsi_cmnd *cmd) int ready = 0; int ret = SUCCESS; + struct ide_atapi_pc *pc; + /* In idescsi_eh_reset we forcefully remove the command from the ide subsystem and reset the device. */ if (test_bit(IDESCSI_LOG_CMD, &scsi->log)) @@ -696,7 +692,9 @@ static int idescsi_eh_reset (struct scsi_cmnd *cmd) spin_lock_irq(cmd->device->host->host_lock); spin_lock(&ide_lock); - if (!scsi->pc || (req = scsi->pc->rq) != HWGROUP(drive)->rq || !HWGROUP(drive)->handler) { + pc = drive->pc; + + if (pc == NULL || (req = pc->rq) != HWGROUP(drive)->rq || !HWGROUP(drive)->handler) { printk (KERN_WARNING "ide-scsi: No active request in idescsi_eh_reset\n"); spin_unlock(&ide_lock); spin_unlock_irq(cmd->device->host->host_lock); @@ -707,9 +705,9 @@ static int idescsi_eh_reset (struct scsi_cmnd *cmd) if (__blk_end_request(req, -EIO, 0)) BUG(); if (blk_sense_request(req)) - kfree(scsi->pc->buf); - kfree(scsi->pc); - scsi->pc = NULL; + kfree(pc->buf); + kfree(pc); + drive->pc = NULL; blk_put_request(req); /* now nuke the drive queue */ -- cgit v1.2.3-70-g09d2