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Date: Sun, 5 Apr 2009 11:16:02 +0200
From: Borislav Petkov <petkovbb@...glemail.com>
To: <bzolnier@...il.com>
Cc: linux-kernel@...r.kernel.org, linux-ide@...r.kernel.org
Subject: [PATCH 2/2] ide-cd: cdrom_decode_status: use return codes instead of naked numbers
Remove unused SECTOR_SIZE while at it.
There should be no functional change resulting from this patch.
Signed-off-by: Borislav Petkov <petkovbb@...il.com>
---
drivers/ide/ide-cd.c | 22 ++++++++--------------
drivers/ide/ide-cd.h | 12 ++++++------
2 files changed, 14 insertions(+), 20 deletions(-)
diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c
index 2aa13d8..1dc61fc 100644
--- a/drivers/ide/ide-cd.c
+++ b/drivers/ide/ide-cd.c
@@ -301,12 +301,6 @@ static int ide_cd_breathe(ide_drive_t *drive, struct request *rq)
}
}
-/**
- * Returns:
- * 0: if the request should be continued.
- * 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, u8 stat)
{
ide_hwif_t *hwif = drive->hwif;
@@ -329,7 +323,7 @@ static int cdrom_decode_status(ide_drive_t *drive, u8 stat)
* Just give up.
*/
rq->cmd_flags |= REQ_FAILED;
- return 2;
+ return REQ_FAIL;
}
/* if we have an error, pass CHECK_CONDITION as the SCSI status byte */
@@ -343,7 +337,7 @@ static int cdrom_decode_status(ide_drive_t *drive, u8 stat)
case NOT_READY:
if (blk_fs_request(rq) && rq_data_dir(rq) == WRITE) {
if (ide_cd_breathe(drive, rq))
- return 1;
+ return REQ_RECOVER;
} else {
cdrom_saw_media_change(drive);
@@ -357,7 +351,7 @@ static int cdrom_decode_status(ide_drive_t *drive, u8 stat)
cdrom_saw_media_change(drive);
if (blk_fs_request(rq) == 0)
- return 0;
+ return REQ_CONT;
/*
* Arrange to retry the request but be sure to give up if we've
@@ -409,7 +403,7 @@ static int cdrom_decode_status(ide_drive_t *drive, u8 stat)
if (err & ~ATA_ABORTED) {
/* go to the default handler for other errors */
ide_error(drive, "cdrom_decode_status", stat);
- return 1;
+ return REQ_RECOVER;
} else if (++rq->errors > ERROR_MAX)
/* we've racked up too many retries, abort */
do_end_request = 1;
@@ -431,7 +425,7 @@ static int cdrom_decode_status(ide_drive_t *drive, u8 stat)
/* if we got a CHECK_CONDITION status, queue a request sense command */
if (stat & ATA_ERR)
cdrom_queue_request_sense(drive, NULL, NULL);
- return 1;
+ return REQ_RECOVER;
end_request:
if (stat & ATA_ERR) {
@@ -445,9 +439,9 @@ end_request:
hwif->rq = NULL;
cdrom_queue_request_sense(drive, rq->sense, rq);
- return 1;
- } else
- return 2;
+ return REQ_RECOVER;
+ }
+ return REQ_FAIL;
}
/*
diff --git a/drivers/ide/ide-cd.h b/drivers/ide/ide-cd.h
index 1d97101..7e17e70 100644
--- a/drivers/ide/ide-cd.h
+++ b/drivers/ide/ide-cd.h
@@ -18,15 +18,15 @@
#define ATAPI_WAIT_WRITE_BUSY (10 * HZ)
-/************************************************************************/
-
-#define SECTOR_BITS 9
-#ifndef SECTOR_SIZE
-#define SECTOR_SIZE (1 << SECTOR_BITS)
-#endif
+#define SECTOR_BITS 9
#define SECTORS_PER_FRAME (CD_FRAMESIZE >> SECTOR_BITS)
#define SECTOR_BUFFER_SIZE (CD_FRAMESIZE * 32)
+/* internal decode_status codes */
+#define REQ_CONT 0
+#define REQ_RECOVER 1
+#define REQ_FAIL 2
+
/* Capabilities Page size including 8 bytes of Mode Page Header */
#define ATAPI_CAPABILITIES_PAGE_SIZE (8 + 20)
#define ATAPI_CAPABILITIES_PAGE_PAD_SIZE 4
--
1.6.2.1
--
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