ide-atapi: use local sense buffer

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>

diff --git a/drivers/ide/ide-atapi.c b/drivers/ide/ide-atapi.c
index b12be1f..66ea1e7 100644 (file)
--- 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 (file)
--- 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 (file)
--- 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");