[SCSI] st: Remove bogus memset

Mike Christie noticed a bogus memset. It can be removed as dead code
since the number of bytes in the driver buffer in fixed block mode is
always a multiple of the tape block size.

Signed-off-by: Kai Mäkisara <Kai.Makisara@kolumbus.fi>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

diff --git a/drivers/scsi/st.c b/drivers/scsi/st.c
index 41b1f81b1651690986ab55dcc3f48b3f39c96367..c2bb53e3d941faee5d29f5902ac757093102d772 100644 (file)
--- a/drivers/scsi/st.c
+++ b/drivers/scsi/st.c
@@ -631,7 +631,7 @@ static int cross_eof(struct scsi_tape * STp, int forward)
 /* Flush the write buffer (never need to write if variable blocksize). */
 static int st_flush_write_buffer(struct scsi_tape * STp)
 {
-       int offset, transfer, blks;
+       int transfer, blks;
        int result;
        unsigned char cmd[MAX_COMMAND_SIZE];
        struct st_request *SRpnt;
@@ -644,14 +644,10 @@ static int st_flush_write_buffer(struct scsi_tape * STp)
        result = 0;
        if (STp->dirty == 1) {
 
-               offset = (STp->buffer)->buffer_bytes;
-               transfer = ((offset + STp->block_size - 1) /
-                           STp->block_size) * STp->block_size;
+               transfer = STp->buffer->buffer_bytes;
                 DEBC(printk(ST_DEB_MSG "%s: Flushing %d bytes.\n",
                                tape_name(STp), transfer));
 
-               memset((STp->buffer)->b_data + offset, 0, transfer - offset);
-
                memset(cmd, 0, MAX_COMMAND_SIZE);
                cmd[0] = WRITE_6;
                cmd[1] = 1;