From 8a116974852a727bdfe6b1b897102903a17228a5 Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Tue, 31 Mar 2009 20:15:03 +0200 Subject: [PATCH] ide-cd: unify cdrom_newpc_intr() exit paths * Move cdrom_end_request() calls from cdrom_decode_status() and ide_cd_check_ireason() to cdrom_newpc_intr(). * Unify cdrom_newpc_intr() exit paths. There should be no functional changes caused by this patch. Cc: Borislav Petkov Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/ide-cd.c | 48 +++++++++++++++++++++----------------------- 1 file changed, 23 insertions(+), 25 deletions(-) diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c index b66da3f1678e..4c32e8db55c3 100644 --- a/drivers/ide/ide-cd.c +++ b/drivers/ide/ide-cd.c @@ -296,7 +296,8 @@ static void cdrom_end_request(ide_drive_t *drive, int uptodate) /* * Returns: * 0: if the request should be continued. - * 1: if the request was ended. + * 1: if the request will be going through error recovery. + * 2: if the request should be ended. */ static int cdrom_decode_status(ide_drive_t *drive, int good_stat, int *stat_ret) { @@ -329,10 +330,7 @@ static int cdrom_decode_status(ide_drive_t *drive, int good_stat, int *stat_ret) * Just give up. */ rq->cmd_flags |= REQ_FAILED; - cdrom_end_request(drive, 0); - ide_error(drive, "request sense failure", stat); - return 1; - + return 2; } else if (blk_pc_request(rq) || rq->cmd_type == REQ_TYPE_ATA_PC) { /* All other functions, except for READ. */ @@ -472,14 +470,12 @@ static int cdrom_decode_status(ide_drive_t *drive, int good_stat, int *stat_ret) */ if (stat & ATA_ERR) cdrom_queue_request_sense(drive, NULL, NULL); + return 1; } else { blk_dump_rq_flags(rq, PFX "bad rq"); - cdrom_end_request(drive, 0); + return 2; } - /* retry, or handle the next request */ - return 1; - end_request: if (stat & ATA_ERR) { struct request_queue *q = drive->queue; @@ -492,10 +488,9 @@ end_request: hwif->rq = NULL; cdrom_queue_request_sense(drive, rq->sense, rq); + return 1; } else - cdrom_end_request(drive, 0); - - return 1; + return 2; } /* @@ -539,7 +534,6 @@ static int ide_cd_check_ireason(ide_drive_t *drive, struct request *rq, if (rq->cmd_type == REQ_TYPE_ATA_PC) rq->cmd_flags |= REQ_FAILED; - cdrom_end_request(drive, 0); return -1; } @@ -741,7 +735,8 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive) xfer_func_t *xferfunc; ide_expiry_t *expiry = NULL; int dma_error = 0, dma, stat, thislen, uptodate = 0; - int write = (rq_data_dir(rq) == WRITE) ? 1 : 0; + int write = (rq_data_dir(rq) == WRITE) ? 1 : 0, rc; + int sense = blk_sense_request(rq); unsigned int timeout; u16 len; u8 ireason; @@ -761,8 +756,12 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive) } } - if (cdrom_decode_status(drive, 0, &stat)) + rc = cdrom_decode_status(drive, 0, &stat); + if (rc) { + if (rc == 2) + goto out_end; return ide_stopped; + } /* using dma, transfer is complete now */ if (dma) { @@ -807,8 +806,6 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive) rq->cmd_flags |= REQ_FAILED; uptodate = 0; } - cdrom_end_request(drive, uptodate); - return ide_stopped; } else if (!blk_pc_request(rq)) { ide_cd_request_sense_fixup(drive, rq); /* complain if we still have data left to transfer */ @@ -820,17 +817,16 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive) } /* check which way to transfer data */ - if (ide_cd_check_ireason(drive, rq, len, ireason, write)) - return ide_stopped; + rc = ide_cd_check_ireason(drive, rq, len, ireason, write); + if (rc) + goto out_end; if (blk_fs_request(rq)) { if (write == 0) { int nskip; - if (ide_cd_check_transfer_size(drive, len)) { - cdrom_end_request(drive, 0); - return ide_stopped; - } + if (ide_cd_check_transfer_size(drive, len)) + goto out_end; /* * First, figure out if we need to bit-bucket @@ -923,7 +919,7 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive) else rq->data += blen; } - if (!write && blk_sense_request(rq)) + if (sense && write == 0) rq->sense_len += blen; } @@ -944,7 +940,7 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive) return ide_started; out_end: - if (blk_pc_request(rq)) { + if (blk_pc_request(rq) && rc == 0) { unsigned int dlen = rq->data_len; if (dma) @@ -956,6 +952,8 @@ out_end: hwif->rq = NULL; } else { cdrom_end_request(drive, uptodate); + if (sense && rc == 2) + ide_error(drive, "request sense failure", stat); } return ide_stopped; } -- 2.34.1