hpsa: allow passthru ioctls to work with bidirectional commands

Treat the the data direction bits as a bit mask allowing both
READ and WRITE at the same time instead of testing for equality
to see if it's a exclusively a READ or a WRITE.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Reviewed-by: Mike Miller <michael.miller@canonical.com>
Reviewed-by: Webb Scales <webb.scales@hp.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

drivers/scsi/hpsa.c

@@ -4963,7 +4963,7 @@ static int hpsa_passthru_ioctl(struct ctlr_info *h, void __user *argp)
 		buff = kmalloc(iocommand.buf_size, GFP_KERNEL);
 		if (buff == NULL)
 			return -EFAULT;
-		if (iocommand.Request.Type.Direction == XFER_WRITE) {
+		if (iocommand.Request.Type.Direction & XFER_WRITE) {
 			/* Copy the data into the buffer we created */
 			if (copy_from_user(buff, iocommand.buf,
 				iocommand.buf_size)) {
@@ -5026,7 +5026,7 @@ static int hpsa_passthru_ioctl(struct ctlr_info *h, void __user *argp)
 		rc = -EFAULT;
 		goto out;
 	}
-	if (iocommand.Request.Type.Direction == XFER_READ &&
+	if ((iocommand.Request.Type.Direction & XFER_READ) &&
 		iocommand.buf_size > 0) {
 		/* Copy the data out of the buffer we created */
 		if (copy_to_user(iocommand.buf, buff, iocommand.buf_size)) {
@@ -5103,7 +5103,7 @@ static int hpsa_big_passthru_ioctl(struct ctlr_info *h, void __user *argp)
 			status = -ENOMEM;
 			goto cleanup1;
 		}
-		if (ioc->Request.Type.Direction == XFER_WRITE) {
+		if (ioc->Request.Type.Direction & XFER_WRITE) {
 			if (copy_from_user(buff[sg_used], data_ptr, sz)) {
 				status = -ENOMEM;
 				goto cleanup1;
@@ -5155,7 +5155,7 @@ static int hpsa_big_passthru_ioctl(struct ctlr_info *h, void __user *argp)
 		status = -EFAULT;
 		goto cleanup0;
 	}
-	if (ioc->Request.Type.Direction == XFER_READ && ioc->buf_size > 0) {
+	if ((ioc->Request.Type.Direction & XFER_READ) && ioc->buf_size > 0) {
 		/* Copy the data out of the buffer we created */
 		BYTE __user *ptr = ioc->buf;
 		for (i = 0; i < sg_used; i++) {