Merge commit '63cc8c75156462d4b42cbdd76c293b7eee7ddbfe':

[linux-2.6-omap-h63xx.git] / drivers / scsi / sr.c

diff --git a/drivers/scsi/sr.c b/drivers/scsi/sr.c
index 7ee86d4a761810f6c66ffbd5ce4af203a824edeb..3292965bfd84272ad83450b46d7a454c588c01bb 100644 (file)
--- a/drivers/scsi/sr.c
+++ b/drivers/scsi/sr.c
@@ -178,6 +178,9 @@ int sr_test_unit_ready(struct scsi_device *sdev, struct scsi_sense_hdr *sshdr)
                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) ||
@@ -653,6 +656,7 @@ static int sr_probe(struct device *dev)
        dev_set_drvdata(dev, cd);
        disk->flags |= GENHD_FL_REMOVABLE;
        add_disk(disk);
+       blk_register_filter(disk);
 
        sdev_printk(KERN_DEBUG, sdev,
                    "Attached scsi CD-ROM %s\n", cd->cdi.name);
@@ -670,24 +674,20 @@ fail:
 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--;
 
@@ -742,14 +742,8 @@ static void get_sectorsize(struct scsi_cd *cd)
 
        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)
@@ -901,6 +895,7 @@ static int sr_remove(struct device *dev)
 {
        struct scsi_cd *cd = dev_get_drvdata(dev);
 
+       blk_unregister_filter(cd->disk);
        del_gendisk(cd->disk);
 
        mutex_lock(&sr_ref_mutex);