X-Git-Url: http://pilppa.org/gitweb/?a=blobdiff_plain;f=drivers%2Fscsi%2Fsr.c;h=7ee86d4a761810f6c66ffbd5ce4af203a824edeb;hb=19b5b517a8b81a448be9b2bdaf18a761a7b9799e;hp=50ba492502035afe85d0bd62899b02c132022c63;hpb=b7e23d913aafc93fc5f119e1be17620073cc3811;p=linux-2.6-omap-h63xx.git

diff --git a/drivers/scsi/sr.c b/drivers/scsi/sr.c
index 50ba4925020..7ee86d4a761 100644
--- a/drivers/scsi/sr.c
+++ b/drivers/scsi/sr.c
@@ -163,6 +163,29 @@ static void scsi_cd_put(struct scsi_cd *cd)
 	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--);
+
+	} 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,
@@ -185,8 +208,7 @@ static int sr_media_change(struct cdrom_device_info *cdi, int slot)
 	}
 
 	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)) {
@@ -601,6 +623,7 @@ static int sr_probe(struct device *dev)
 	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;
@@ -733,10 +756,8 @@ 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[] =
 	{
@@ -758,23 +779,8 @@ static void get_capabilities(struct scsi_cd *cd)
 		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,