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Subject[PATCH 09/15] ide-atapi: use local sense buffer
Date
Access the sense buffer through the bio in ->pc_callback method thus
alleviating the need for the pc->buf pointer.

There should be no functional change resulting from this patch.

Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
---
drivers/ide/ide-atapi.c | 4 +++-
drivers/ide/ide-floppy.c | 3 ++-
drivers/ide/ide-tape.c | 5 +++--
3 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/drivers/ide/ide-atapi.c b/drivers/ide/ide-atapi.c
index b12be1f..66ea1e7 100644
--- a/drivers/ide/ide-atapi.c
+++ b/drivers/ide/ide-atapi.c
@@ -253,7 +253,9 @@ void ide_retry_pc(ide_drive_t *drive)
/* init pc from sense_rq */
ide_init_pc(pc);
memcpy(pc->c, sense_rq->cmd, 12);
- pc->buf = bio_data(sense_rq->bio); /* pointer to mapped address */
+
+ /* pointer to mapped address */
+ pc->buf = bio_data(sense_rq->bio);
pc->req_xfer = blk_rq_bytes(sense_rq);

if (drive->media == ide_tape)
diff --git a/drivers/ide/ide-floppy.c b/drivers/ide/ide-floppy.c
index 060c893..14e5e9c 100644
--- a/drivers/ide/ide-floppy.c
+++ b/drivers/ide/ide-floppy.c
@@ -77,7 +77,8 @@ static int ide_floppy_callback(ide_drive_t *drive, int dsc)
(rq && blk_pc_request(rq)))
uptodate = 1; /* FIXME */
else if (pc->c[0] == GPCMD_REQUEST_SENSE) {
- u8 *buf = pc->buf;
+
+ u8 *buf = bio_data(rq->bio);

if (!pc->error) {
floppy->sense_key = buf[2] & 0x0F;
diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c
index 1f7f504..ef5f342 100644
--- a/drivers/ide/ide-tape.c
+++ b/drivers/ide/ide-tape.c
@@ -288,11 +288,12 @@ static struct ide_tape_obj *ide_tape_chrdev_get(unsigned int i)
* called on each failed packet command retry to analyze the request sense. We
* currently do not utilize this information.
*/
-static void idetape_analyze_error(ide_drive_t *drive, u8 *sense)
+static void idetape_analyze_error(ide_drive_t *drive)
{
idetape_tape_t *tape = drive->driver_data;
struct ide_atapi_pc *pc = drive->failed_pc;
struct request *rq = drive->hwif->rq;
+ u8 *sense = bio_data(rq->bio);

tape->sense_key = sense[2] & 0xF;
tape->asc = sense[12];
@@ -362,7 +363,7 @@ static int ide_tape_callback(ide_drive_t *drive, int dsc)

if (pc->c[0] == REQUEST_SENSE) {
if (uptodate)
- idetape_analyze_error(drive, pc->buf);
+ idetape_analyze_error(drive);
else
printk(KERN_ERR "ide-tape: Error in REQUEST SENSE "
"itself - Aborting request!\n");
--
1.6.3


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