X-Git-Url: http://pilppa.org/gitweb/?a=blobdiff_plain;f=drivers%2Fscsi%2Fscsi_scan.c;h=18486b51668da7a3591c3112e4eb18ca123a0c8b;hb=57c44c5f6fb0a8002feb258c1af58e1a744b1fcb;hp=b14dc02c3ded0883a13543000d4797cc8bb17388;hpb=72558dde738b06cc01e16b3247a9659ca739e22d;p=linux-2.6-omap-h63xx.git

diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c
index b14dc02c3de..18486b51668 100644
--- a/drivers/scsi/scsi_scan.c
+++ b/drivers/scsi/scsi_scan.c
@@ -216,7 +216,7 @@ static void scsi_unlock_floptical(struct scsi_device *sdev,
 	scsi_cmd[4] = 0x2a;     /* size */
 	scsi_cmd[5] = 0;
 	scsi_execute_req(sdev, scsi_cmd, DMA_FROM_DEVICE, result, 0x2a, NULL,
-			 SCSI_TIMEOUT, 3);
+			 SCSI_TIMEOUT, 3, NULL);
 }
 
 /**
@@ -573,6 +573,8 @@ static int scsi_probe_lun(struct scsi_device *sdev, unsigned char *inq_result,
 
 	/* Each pass gets up to three chances to ignore Unit Attention */
 	for (count = 0; count < 3; ++count) {
+		int resid;
+
 		memset(scsi_cmd, 0, 6);
 		scsi_cmd[0] = INQUIRY;
 		scsi_cmd[4] = (unsigned char) try_inquiry_len;
@@ -581,7 +583,8 @@ static int scsi_probe_lun(struct scsi_device *sdev, unsigned char *inq_result,
 
 		result = scsi_execute_req(sdev,  scsi_cmd, DMA_FROM_DEVICE,
 					  inq_result, try_inquiry_len, &sshdr,
-					  HZ / 2 + HZ * scsi_inq_timeout, 3);
+					  HZ / 2 + HZ * scsi_inq_timeout, 3,
+					  &resid);
 
 		SCSI_LOG_SCAN_BUS(3, printk(KERN_INFO "scsi scan: INQUIRY %s "
 				"with code 0x%x\n",
@@ -602,6 +605,14 @@ static int scsi_probe_lun(struct scsi_device *sdev, unsigned char *inq_result,
 				    (sshdr.ascq == 0))
 					continue;
 			}
+		} else {
+			/*
+			 * if nothing was transferred, we try
+			 * again. It's a workaround for some USB
+			 * devices.
+			 */
+			if (resid == try_inquiry_len)
+				continue;
 		}
 		break;
 	}
@@ -1390,7 +1401,7 @@ static int scsi_report_lun_scan(struct scsi_target *starget, int bflags,
 
 		result = scsi_execute_req(sdev, scsi_cmd, DMA_FROM_DEVICE,
 					  lun_data, length, &sshdr,
-					  SCSI_TIMEOUT + 4 * HZ, 3);
+					  SCSI_TIMEOUT + 4 * HZ, 3, NULL);
 
 		SCSI_LOG_SCAN_BUS(3, printk (KERN_INFO "scsi scan: REPORT LUNS"
 				" %s (try %d) result 0x%x\n", result