[SCSI] Wrong size information for devices with disabled read access

When accessing a device with disabled read access the capacity is set
randomly to 1GB. This makes it impossible to userspace tools to detect
invalid device capacities.

Signed-off-by: Mike Anderson <andmike@us.ibm.com>
Acked-by: Chris Mason <mason@suse.com>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index 98bd3aa..638cff4 100644 (file)
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -1215,7 +1215,7 @@ repeat:
                /* Either no media are present but the drive didn't tell us,
                   or they are present but the read capacity command fails */
                /* sdkp->media_present = 0; -- not always correct */
-               sdkp->capacity = 0x200000; /* 1 GB - random */
+               sdkp->capacity = 0; /* unknown mapped to zero - as usual */
 
                return;
        } else if (the_result && longrc) {