Use these functions instead of open-coding them.
Link: https://lore.kernel.org/r/20200313203102.16613-5-bvanassche@acm.org
Cc: Kai Makisara <Kai.Makisara@kolumbus.fi>
Cc: James E.J. Bottomley <jejb@linux.ibm.com>
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
#include <linux/uaccess.h>
#include <asm/dma.h>
+#include <asm/unaligned.h>
#include <scsi/scsi.h>
#include <scsi/scsi_dbg.h>
if (!debugging)
return;
- sc = cmd[2] & 0x80 ? 0xff000000 : 0;
- sc |= (cmd[2] << 16) | (cmd[3] << 8) | cmd[4];
+ sc = sign_extend32(get_unaligned_be24(&cmd[2]), 23);
if (direction)
sc = -sc;
st_printk(ST_DEB_MSG, STp, "Spacing tape %s over %d %s.\n",