1 files changed, 27 insertions, 12 deletions

diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index 19afb25e44d..0410e1bf109 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -373,9 +373,6 @@ static int sd_init_command(struct scsi_cmnd * SCpnt)
 		SCpnt->cmnd[7] = (unsigned char) (this_count >> 8) & 0xff;
 		SCpnt->cmnd[8] = (unsigned char) this_count & 0xff;
 	} else {
-		if (this_count > 0xff)
-			this_count = 0xff;
-
 		SCpnt->cmnd[1] |= (unsigned char) ((block >> 16) & 0x1f);
 		SCpnt->cmnd[2] = (unsigned char) ((block >> 8) & 0xff);
 		SCpnt->cmnd[3] = (unsigned char) block & 0xff;
@@ -1368,17 +1365,26 @@ sd_read_write_protect_flag(struct scsi_disk *sdkp, char *diskname,
  */
 static void
 sd_read_cache_type(struct scsi_disk *sdkp, char *diskname,
-		   struct scsi_request *SRpnt, unsigned char *buffer) {
+		   struct scsi_request *SRpnt, unsigned char *buffer)
+{
 	int len = 0, res;
 
-	const int dbd = 0;	   /* DBD */
-	const int modepage = 0x08; /* current values, cache page */
+	int dbd;
+	int modepage;
 	struct scsi_mode_data data;
 	struct scsi_sense_hdr sshdr;
 
 	if (sdkp->device->skip_ms_page_8)
 		goto defaults;
 
+	if (sdkp->device->type == TYPE_RBC) {
+		modepage = 6;
+		dbd = 8;
+	} else {
+		modepage = 8;
+		dbd = 0;
+	}
+
 	/* cautiously ask */
 	res = sd_do_mode_sense(SRpnt, dbd, modepage, buffer, 4, &data);
 
@@ -1409,11 +1415,20 @@ sd_read_cache_type(struct scsi_disk *sdkp, char *diskname,
 			"write back, no read (daft)"
 		};
 		int ct = 0;
-		int offset = data.header_length +
-			data.block_descriptor_length + 2;
+		int offset = data.header_length + data.block_descriptor_length;
+
+		if ((buffer[offset] & 0x3f) != modepage) {
+			printk(KERN_ERR "%s: got wrong page\n", diskname);
+			goto defaults;
+		}
 
-		sdkp->WCE = ((buffer[offset] & 0x04) != 0);
-		sdkp->RCD = ((buffer[offset] & 0x01) != 0);
+		if (modepage == 8) {
+			sdkp->WCE = ((buffer[offset + 2] & 0x04) != 0);
+			sdkp->RCD = ((buffer[offset + 2] & 0x01) != 0);
+		} else {
+			sdkp->WCE = ((buffer[offset + 2] & 0x01) == 0);
+			sdkp->RCD = 0;
+		}
 
 		ct =  sdkp->RCD + 2*sdkp->WCE;
 
@@ -1533,7 +1548,7 @@ static int sd_probe(struct device *dev)
 	int error;
 
 	error = -ENODEV;
-	if ((sdp->type != TYPE_DISK) && (sdp->type != TYPE_MOD))
+	if (sdp->type != TYPE_DISK && sdp->type != TYPE_MOD && sdp->type != TYPE_RBC)
 		goto out;
 
 	SCSI_LOG_HLQUEUE(3, printk("sd_attach: scsi device: <%d,%d,%d,%d>\n", 
@@ -1570,7 +1585,7 @@ static int sd_probe(struct device *dev)
 	sdkp->openers = 0;
 
 	if (!sdp->timeout) {
-		if (sdp->type == TYPE_DISK)
+		if (sdp->type != TYPE_MOD)
 			sdp->timeout = SD_TIMEOUT;
 		else
 			sdp->timeout = SD_MOD_TIMEOUT;