1 files changed, 14 insertions, 14 deletions

diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c
index 7b21c7eac5b0..392a5bdf2fd3 100644
--- a/drivers/ide/ide-cd.c
+++ b/drivers/ide/ide-cd.c
@@ -210,10 +210,12 @@ static void ide_cd_complete_failed_rq(ide_drive_t *drive, struct request *rq)
 {
         /*
          * For REQ_TYPE_SENSE, "rq->special" points to the original
-         * failed request
+         * failed request.  Also, the sense data should be read
+         * directly from rq which might be different from the original
+         * sense buffer if it got copied during mapping.
          */
         struct request *failed = (struct request *)rq->special;
-        struct request_sense *sense = &drive->sense_data;
+        void *sense = bio_data(rq->bio);
 
         if (failed) {
                 if (failed->sense) {
@@ -398,7 +400,7 @@ 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)
-                ide_queue_sense_rq(drive, NULL);
+                return ide_queue_sense_rq(drive, NULL) ? 2 : 1;
         return 1;
 
 end_request:
@@ -412,8 +414,7 @@ end_request:
 
                 hwif->rq = NULL;
 
-                ide_queue_sense_rq(drive, rq);
-                return 1;
+                return ide_queue_sense_rq(drive, rq) ? 2 : 1;
         } else
                 return 2;
 }
@@ -507,8 +508,12 @@ int ide_cd_queue_pc(ide_drive_t *drive, const unsigned char *cmd,
                 rq->cmd_flags |= cmd_flags;
                 rq->timeout = timeout;
                 if (buffer) {
-                        rq->data = buffer;
-                        rq->data_len = *bufflen;
+                        error = blk_rq_map_kern(drive->queue, rq, buffer,
+                                                *bufflen, GFP_NOIO);
+                        if (error) {
+                                blk_put_request(rq);
+                                return error;
+                        }
                 }
 
                 error = blk_execute_rq(drive->queue, info->disk, rq, 0);
@@ -802,15 +807,10 @@ static void cdrom_do_block_pc(ide_drive_t *drive, struct request *rq)
         drive->dma = 0;
 
         /* sg request */
-        if (rq->bio || ((rq->cmd_type == REQ_TYPE_ATA_PC) && rq->data_len)) {
+        if (rq->bio) {
                 struct request_queue *q = drive->queue;
+                char *buf = bio_data(rq->bio);
                 unsigned int alignment;
-                char *buf;
-
-                if (rq->bio)
-                        buf = bio_data(rq->bio);
-                else
-                        buf = rq->data;
 
                 drive->dma = !!(drive->dev_flags & IDE_DFLAG_USING_DMA);