From: Bartlomiej Zolnierkiewicz Date: Mon, 13 Oct 2008 19:39:32 +0000 (+0200) Subject: ide: add ide_retry_pc() helper X-Git-Tag: v3.12-rc1~18105^2~59 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=6b0da28b2d0f4f4e2c55689fc062db569075ff60;p=kernel%2Fkernel-generic.git ide: add ide_retry_pc() helper * Add ide_create_request_sense_cmd() and ide_retry_pc() helpers and convert ide-{atapi,floppy,tape}.c to use them. * Remove no longer used ide*_create_request_sense_cmd(), ide*_retry_pc() and 'retry_pc' argument from ide_pc_intr(). * Make ide_queue_pc_head() static. There should be no functional changes caused by this patch. Cc: Borislav Petkov Signed-off-by: Bartlomiej Zolnierkiewicz --- diff --git a/drivers/ide/ide-atapi.c b/drivers/ide/ide-atapi.c index 1848351..d758dcd 100644 --- a/drivers/ide/ide-atapi.c +++ b/drivers/ide/ide-atapi.c @@ -124,8 +124,8 @@ EXPORT_SYMBOL_GPL(ide_init_pc); * the current request, so that it will be processed immediately, on the next * pass through the driver. */ -void ide_queue_pc_head(ide_drive_t *drive, struct gendisk *disk, - struct ide_atapi_pc *pc, struct request *rq) +static void ide_queue_pc_head(ide_drive_t *drive, struct gendisk *disk, + struct ide_atapi_pc *pc, struct request *rq) { blk_rq_init(NULL, rq); rq->cmd_type = REQ_TYPE_SPECIAL; @@ -137,7 +137,6 @@ void ide_queue_pc_head(ide_drive_t *drive, struct gendisk *disk, rq->cmd[13] = REQ_IDETAPE_PC1; ide_do_drive_cmd(drive, rq); } -EXPORT_SYMBOL_GPL(ide_queue_pc_head); /* * Add a special packet command request to the tail of the request queue, @@ -203,6 +202,37 @@ int ide_set_media_lock(ide_drive_t *drive, struct gendisk *disk, int on) } EXPORT_SYMBOL_GPL(ide_set_media_lock); +void ide_create_request_sense_cmd(ide_drive_t *drive, struct ide_atapi_pc *pc) +{ + ide_init_pc(pc); + pc->c[0] = REQUEST_SENSE; + if (drive->media == ide_floppy) { + pc->c[4] = 255; + pc->req_xfer = 18; + } else { + pc->c[4] = 20; + pc->req_xfer = 20; + } +} +EXPORT_SYMBOL_GPL(ide_create_request_sense_cmd); + +/* + * Called when an error was detected during the last packet command. + * We queue a request sense packet command in the head of the request list. + */ +void ide_retry_pc(ide_drive_t *drive, struct gendisk *disk) +{ + struct request *rq = &drive->request_sense_rq; + struct ide_atapi_pc *pc = &drive->request_sense_pc; + + (void)ide_read_error(drive); + ide_create_request_sense_cmd(drive, pc); + if (drive->media == ide_tape) + set_bit(IDE_AFLAG_IGNORE_DSC, &drive->atapi_flags); + ide_queue_pc_head(drive, disk, pc, rq); +} +EXPORT_SYMBOL_GPL(ide_retry_pc); + int ide_scsi_expiry(ide_drive_t *drive) { struct ide_atapi_pc *pc = drive->pc; @@ -219,7 +249,6 @@ EXPORT_SYMBOL_GPL(ide_scsi_expiry); /* TODO: unify the code thus making some arguments go away */ ide_startstop_t ide_pc_intr(ide_drive_t *drive, ide_handler_t *handler, void (*update_buffers)(ide_drive_t *, struct ide_atapi_pc *), - void (*retry_pc)(ide_drive_t *), int (*io_buffers)(ide_drive_t *, struct ide_atapi_pc *, unsigned, int)) { struct ide_atapi_pc *pc = drive->pc; @@ -299,7 +328,7 @@ ide_startstop_t ide_pc_intr(ide_drive_t *drive, ide_handler_t *handler, debug_log("[cmd %x]: check condition\n", rq->cmd[0]); /* Retry operation */ - retry_pc(drive); + ide_retry_pc(drive, rq->rq_disk); /* queued, but not started */ return ide_stopped; diff --git a/drivers/ide/ide-floppy.c b/drivers/ide/ide-floppy.c index 6a1ade8..6e62ffa 100644 --- a/drivers/ide/ide-floppy.c +++ b/drivers/ide/ide-floppy.c @@ -193,34 +193,11 @@ static void ide_floppy_callback(ide_drive_t *drive, int dsc) idefloppy_end_request(drive, uptodate, 0); } -void ide_floppy_create_request_sense_cmd(struct ide_atapi_pc *pc) -{ - ide_init_pc(pc); - pc->c[0] = GPCMD_REQUEST_SENSE; - pc->c[4] = 255; - pc->req_xfer = 18; -} - -/* - * Called when an error was detected during the last packet command. We queue a - * request sense packet command in the head of the request list. - */ -static void idefloppy_retry_pc(ide_drive_t *drive) -{ - struct ide_floppy_obj *floppy = drive->driver_data; - struct request *rq = &drive->request_sense_rq; - struct ide_atapi_pc *pc = &drive->request_sense_pc; - - (void)ide_read_error(drive); - ide_floppy_create_request_sense_cmd(pc); - ide_queue_pc_head(drive, floppy->disk, pc, rq); -} - /* The usual interrupt handler called during a packet command. */ static ide_startstop_t idefloppy_pc_intr(ide_drive_t *drive) { return ide_pc_intr(drive, idefloppy_pc_intr, idefloppy_update_buffers, - idefloppy_retry_pc, ide_io_buffers); + ide_io_buffers); } /* diff --git a/drivers/ide/ide-floppy.h b/drivers/ide/ide-floppy.h index e9e14c3..ced5ceb 100644 --- a/drivers/ide/ide-floppy.h +++ b/drivers/ide/ide-floppy.h @@ -49,7 +49,6 @@ typedef struct ide_floppy_obj { /* ide-floppy.c */ void ide_floppy_create_mode_sense_cmd(struct ide_atapi_pc *, u8); void ide_floppy_create_read_capacity_cmd(struct ide_atapi_pc *); -void ide_floppy_create_request_sense_cmd(struct ide_atapi_pc *); /* ide-floppy_ioctl.c */ int ide_floppy_format_ioctl(ide_drive_t *, struct file *, unsigned int, diff --git a/drivers/ide/ide-floppy_ioctl.c b/drivers/ide/ide-floppy_ioctl.c index 5ffc451..9723ed9 100644 --- a/drivers/ide/ide-floppy_ioctl.c +++ b/drivers/ide/ide-floppy_ioctl.c @@ -195,7 +195,7 @@ static int ide_floppy_get_format_progress(ide_drive_t *drive, int __user *arg) int progress_indication = 0x10000; if (drive->atapi_flags & IDE_AFLAG_SRFP) { - ide_floppy_create_request_sense_cmd(&pc); + ide_create_request_sense_cmd(drive, &pc); if (ide_queue_pc_tail(drive, floppy->disk, &pc)) return -EIO; diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c index 72ecc56..72caca3 100644 --- a/drivers/ide/ide-tape.c +++ b/drivers/ide/ide-tape.c @@ -581,31 +581,6 @@ static void ide_tape_callback(ide_drive_t *drive, int dsc) idetape_end_request(drive, uptodate, 0); } -static void idetape_create_request_sense_cmd(struct ide_atapi_pc *pc) -{ - ide_init_pc(pc); - pc->c[0] = REQUEST_SENSE; - pc->c[4] = 20; - pc->req_xfer = 20; -} - -/* - * idetape_retry_pc is called when an error was detected during the - * last packet command. We queue a request sense packet command in - * the head of the request list. - */ -static void idetape_retry_pc(ide_drive_t *drive) -{ - struct ide_tape_obj *tape = drive->driver_data; - struct request *rq = &drive->request_sense_rq; - struct ide_atapi_pc *pc = &drive->request_sense_pc; - - (void)ide_read_error(drive); - idetape_create_request_sense_cmd(pc); - set_bit(IDE_AFLAG_IGNORE_DSC, &drive->atapi_flags); - ide_queue_pc_head(drive, tape->disk, pc, rq); -} - /* * Postpone the current request so that ide.c will be able to service requests * from another device on the same hwgroup while we are polling for DSC. @@ -653,7 +628,7 @@ static int ide_tape_io_buffers(ide_drive_t *drive, struct ide_atapi_pc *pc, static ide_startstop_t idetape_pc_intr(ide_drive_t *drive) { return ide_pc_intr(drive, idetape_pc_intr, idetape_update_buffers, - idetape_retry_pc, ide_tape_io_buffers); + ide_tape_io_buffers); } /* @@ -789,7 +764,7 @@ static ide_startstop_t idetape_media_access_finished(ide_drive_t *drive) printk(KERN_ERR "ide-tape: %s: I/O error, ", tape->name); /* Retry operation */ - idetape_retry_pc(drive); + ide_retry_pc(drive, tape->disk); return ide_stopped; } pc->error = 0; diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c index f71d1b34..ff2b199 100644 --- a/drivers/scsi/ide-scsi.c +++ b/drivers/scsi/ide-scsi.c @@ -275,7 +275,7 @@ static int idescsi_end_request (ide_drive_t *drive, int uptodate, int nrsecs) */ static ide_startstop_t idescsi_pc_intr (ide_drive_t *drive) { - return ide_pc_intr(drive, idescsi_pc_intr, NULL, NULL, ide_io_buffers); + return ide_pc_intr(drive, idescsi_pc_intr, NULL, ide_io_buffers); } static ide_startstop_t idescsi_transfer_pc(ide_drive_t *drive) diff --git a/include/linux/ide.h b/include/linux/ide.h index 908b4fc..d88cced 100644 --- a/include/linux/ide.h +++ b/include/linux/ide.h @@ -1169,13 +1169,13 @@ enum { REQ_IDETAPE_WRITE = (1 << 3), }; -void ide_queue_pc_head(ide_drive_t *, struct gendisk *, struct ide_atapi_pc *, - struct request *); int ide_queue_pc_tail(ide_drive_t *, struct gendisk *, struct ide_atapi_pc *); int ide_do_test_unit_ready(ide_drive_t *, struct gendisk *); int ide_do_start_stop(ide_drive_t *, struct gendisk *, int); int ide_set_media_lock(ide_drive_t *, struct gendisk *, int); +void ide_create_request_sense_cmd(ide_drive_t *, struct ide_atapi_pc *); +void ide_retry_pc(ide_drive_t *, struct gendisk *); static inline unsigned long ide_scsi_get_timeout(struct ide_atapi_pc *pc) { @@ -1186,7 +1186,6 @@ int ide_scsi_expiry(ide_drive_t *); ide_startstop_t ide_pc_intr(ide_drive_t *drive, ide_handler_t *handler, void (*update_buffers)(ide_drive_t *, struct ide_atapi_pc *), - void (*retry_pc)(ide_drive_t *), int (*io_buffers)(ide_drive_t *, struct ide_atapi_pc *, unsigned int, int)); ide_startstop_t ide_transfer_pc(ide_drive_t *,