diff -urN oldtree/drivers/ata/libata-scsi.c newtree/drivers/ata/libata-scsi.c
--- oldtree/drivers/ata/libata-scsi.c	2006-09-24 17:03:56.000000000 -0400
+++ newtree/drivers/ata/libata-scsi.c	2006-09-27 14:02:13.000000000 -0400
@@ -164,10 +164,10 @@
 {
 	int rc = 0;
 	u8 scsi_cmd[MAX_COMMAND_SIZE];
-	u8 args[4], *argbuf = NULL;
+	u8 args[4], *argbuf = NULL, *sensebuf = NULL;
 	int argsize = 0;
-	struct scsi_sense_hdr sshdr;
 	enum dma_data_direction data_dir;
+	int cmd_result;
 
 	if (arg == NULL)
 		return -EINVAL;
@@ -175,6 +175,10 @@
 	if (copy_from_user(args, arg, sizeof(args)))
 		return -EFAULT;
 
+	sensebuf = kzalloc(SCSI_SENSE_BUFFERSIZE, GFP_NOIO);
+	if (!sensebuf)
+		return -ENOMEN;
+
 	memset(scsi_cmd, 0, sizeof(scsi_cmd));
 
 	if (args[3]) {
@@ -191,7 +195,7 @@
 		data_dir = DMA_FROM_DEVICE;
 	} else {
 		scsi_cmd[1]  = (3 << 1); /* Non-data */
-		/* scsi_cmd[2] is already 0 -- no off.line, cc, or data xfer */
+		scsi_cmd[2]  = 0x20;	/* cc but no off.line or data xfer */
 		data_dir = DMA_NONE;
 	}
 
@@ -210,18 +214,46 @@
 
 	/* Good values for timeout and retries?  Values below
 	   from scsi_ioctl_send_command() for default case... */
-	if (scsi_execute_req(scsidev, scsi_cmd, data_dir, argbuf, argsize,
-			     &sshdr, (10*HZ), 5)) {
+        cmd_result = scsi_execute(scsidev, scsi_cmd, data_dir, argbuf, argsize,
+                                  sensebuf, (10*HZ), 5, 0);
+
+        if ((cmd_result>>24) == DRIVER_SENSE) {   /* sense data available */
+                u8 *desc = sensebuf + 8;
+                cmd_result &= ~(0xFF<<24); /* DRIVER_SENSE is not an error */
+
+                /* If we set cc then ATA pass-through will cause a
+                 * check condition even if no error. Filter that. */
+                if (cmd_result & SAM_STAT_CHECK_CONDITION) {
+                        struct scsi_sense_hdr sshdr;
+                        scsi_normalize_sense(sensebuf, SCSI_SENSE_BUFFERSIZE,
+                                              &sshdr);
+                        if (sshdr.sense_key==0 &&
+                            sshdr.asc==0 && sshdr.ascq==0)
+                                cmd_result &= ~SAM_STAT_CHECK_CONDITION;
+                }
+ 
+                /* Send userspace a few ATA registers (same as drivers/ide) */
+                if (sensebuf[0] == 0x72 &&     /* format is "descriptor" */
+                    desc[0] == 0x09 ) {        /* code is "ATA Descriptor" */
+                        args[0] = desc[13];    /* status */
+                        args[1] = desc[3];     /* error */
+                        args[2] = desc[5];     /* sector count (0:7) */
+                        if (copy_to_user(arg, args, sizeof(args)))
+                                rc = -EFAULT;
+                }
+        }
+
+        if (cmd_result) {
+
 		rc = -EIO;
 		goto error;
 	}
 
-	/* Need code to retrieve data from check condition? */
-
 	if ((argbuf)
 	 && copy_to_user(arg + sizeof(args), argbuf, argsize))
 		rc = -EFAULT;
 error:
+	kfree(sensebuf);
 	kfree(argbuf);
 	return rc;
 }