mutex_unlock(&sr_ref_mutex);
}
+/* identical to scsi_test_unit_ready except that it doesn't
+ * eat the NOT_READY returns for removable media */
+int sr_test_unit_ready(struct scsi_device *sdev, struct scsi_sense_hdr *sshdr)
+{
+ int retries = MAX_RETRIES;
+ int the_result;
+ u8 cmd[] = {TEST_UNIT_READY, 0, 0, 0, 0, 0 };
+
+ /* issue TEST_UNIT_READY until the initial startup UNIT_ATTENTION
+ * conditions are gone, or a timeout happens
+ */
+ do {
+ the_result = scsi_execute_req(sdev, cmd, DMA_NONE, NULL,
+ 0, sshdr, SR_TIMEOUT,
+ retries--);
+ if (scsi_sense_valid(sshdr) &&
+ sshdr->sense_key == UNIT_ATTENTION)
+ sdev->changed = 1;
+
+ } while (retries > 0 &&
+ (!scsi_status_is_good(the_result) ||
+ (scsi_sense_valid(sshdr) &&
+ sshdr->sense_key == UNIT_ATTENTION)));
+ return the_result;
+}
+
/*
* This function checks to see if the media has been changed in the
* CDROM drive. It is possible that we have already sensed a change,
}
sshdr = kzalloc(sizeof(*sshdr), GFP_KERNEL);
- retval = scsi_test_unit_ready(cd->device, SR_TIMEOUT, MAX_RETRIES,
- sshdr);
+ retval = sr_test_unit_ready(cd->device, sshdr);
if (retval || (scsi_sense_valid(sshdr) &&
/* 0x3a is medium not present */
sshdr->asc == 0x3a)) {
cd->disk = disk;
cd->capacity = 0x1fffff;
cd->device->changed = 1; /* force recheck CD type */
+ cd->previous_state = 1;
cd->use = 1;
cd->readcd_known = 0;
cd->readcd_cdda = 0;
static void get_sectorsize(struct scsi_cd *cd)
{
unsigned char cmd[10];
- unsigned char *buffer;
+ unsigned char buffer[8];
int the_result, retries = 3;
int sector_size;
struct request_queue *queue;
- buffer = kmalloc(512, GFP_KERNEL | GFP_DMA);
- if (!buffer)
- goto Enomem;
-
do {
cmd[0] = READ_CAPACITY;
memset((void *) &cmd[1], 0, 9);
- memset(buffer, 0, 8);
+ memset(buffer, 0, sizeof(buffer));
/* Do the command and wait.. */
the_result = scsi_execute_req(cd->device, cmd, DMA_FROM_DEVICE,
- buffer, 8, NULL, SR_TIMEOUT,
- MAX_RETRIES);
+ buffer, sizeof(buffer), NULL,
+ SR_TIMEOUT, MAX_RETRIES);
retries--;
queue = cd->device->request_queue;
blk_queue_hardsect_size(queue, sector_size);
-out:
- kfree(buffer);
- return;
-Enomem:
- cd->capacity = 0x1fffff;
- cd->device->sector_size = 2048; /* A guess, just in case */
- goto out;
+ return;
}
static void get_capabilities(struct scsi_cd *cd)
{
unsigned char *buffer;
struct scsi_mode_data data;
- unsigned char cmd[MAX_COMMAND_SIZE];
struct scsi_sense_hdr sshdr;
- unsigned int the_result;
- int retries, rc, n;
+ int rc, n;
static const char *loadmech[] =
{
return;
}
- /* issue TEST_UNIT_READY until the initial startup UNIT_ATTENTION
- * conditions are gone, or a timeout happens
- */
- retries = 0;
- do {
- memset((void *)cmd, 0, MAX_COMMAND_SIZE);
- cmd[0] = TEST_UNIT_READY;
-
- the_result = scsi_execute_req (cd->device, cmd, DMA_NONE, NULL,
- 0, &sshdr, SR_TIMEOUT,
- MAX_RETRIES);
-
- retries++;
- } while (retries < 5 &&
- (!scsi_status_is_good(the_result) ||
- (scsi_sense_valid(&sshdr) &&
- sshdr.sense_key == UNIT_ATTENTION)));
+ /* eat unit attentions */
+ sr_test_unit_ready(cd->device, &sshdr);
/* ask for mode page 0x2a */
rc = scsi_mode_sense(cd->device, 0, 0x2a, buffer, 128,