[SCSI] pmcraid: redundant check in pmcraid_check_ioctl_buffer()

struct pmcraid_ioctl_header member buffer_length is unsigned, so this
check appears redundant.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Acked-by: Anil Ravindranath <anil_ravindranath@pmc-sierra.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

diff --git a/drivers/scsi/pmcraid.c b/drivers/scsi/pmcraid.c
index 53aefff..c44e4ab 100644 (file)
--- a/drivers/scsi/pmcraid.c
+++ b/drivers/scsi/pmcraid.c
@@ -3751,12 +3751,6 @@ static int pmcraid_check_ioctl_buffer(
                return -EINVAL;
        }
 
-       /* buffer length can't be negetive */
-       if (hdr->buffer_length < 0) {
-               pmcraid_err("ioctl: invalid buffer length specified\n");
-               return -EINVAL;
-       }
-
        /* check for appropriate buffer access */
        if ((_IOC_DIR(cmd) & _IOC_READ) == _IOC_READ)
                access = VERIFY_WRITE;