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path: root/drivers/scsi/sr.c
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Diffstat (limited to 'drivers/scsi/sr.c')
-rw-r--r--drivers/scsi/sr.c20
1 files changed, 5 insertions, 15 deletions
diff --git a/drivers/scsi/sr.c b/drivers/scsi/sr.c
index c82df8bd4d89..27f5bfd1def3 100644
--- a/drivers/scsi/sr.c
+++ b/drivers/scsi/sr.c
@@ -673,24 +673,20 @@ fail:
673static void get_sectorsize(struct scsi_cd *cd) 673static void get_sectorsize(struct scsi_cd *cd)
674{ 674{
675 unsigned char cmd[10]; 675 unsigned char cmd[10];
676 unsigned char *buffer; 676 unsigned char buffer[8];
677 int the_result, retries = 3; 677 int the_result, retries = 3;
678 int sector_size; 678 int sector_size;
679 struct request_queue *queue; 679 struct request_queue *queue;
680 680
681 buffer = kmalloc(512, GFP_KERNEL | GFP_DMA);
682 if (!buffer)
683 goto Enomem;
684
685 do { 681 do {
686 cmd[0] = READ_CAPACITY; 682 cmd[0] = READ_CAPACITY;
687 memset((void *) &cmd[1], 0, 9); 683 memset((void *) &cmd[1], 0, 9);
688 memset(buffer, 0, 8); 684 memset(buffer, 0, sizeof(buffer));
689 685
690 /* Do the command and wait.. */ 686 /* Do the command and wait.. */
691 the_result = scsi_execute_req(cd->device, cmd, DMA_FROM_DEVICE, 687 the_result = scsi_execute_req(cd->device, cmd, DMA_FROM_DEVICE,
692 buffer, 8, NULL, SR_TIMEOUT, 688 buffer, sizeof(buffer), NULL,
693 MAX_RETRIES); 689 SR_TIMEOUT, MAX_RETRIES);
694 690
695 retries--; 691 retries--;
696 692
@@ -745,14 +741,8 @@ static void get_sectorsize(struct scsi_cd *cd)
745 741
746 queue = cd->device->request_queue; 742 queue = cd->device->request_queue;
747 blk_queue_hardsect_size(queue, sector_size); 743 blk_queue_hardsect_size(queue, sector_size);
748out:
749 kfree(buffer);
750 return;
751 744
752Enomem: 745 return;
753 cd->capacity = 0x1fffff;
754 cd->device->sector_size = 2048; /* A guess, just in case */
755 goto out;
756} 746}
757 747
758static void get_capabilities(struct scsi_cd *cd) 748static void get_capabilities(struct scsi_cd *cd)