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authorKim B. Heino <Kim.Heino@bluegiga.com>2010-03-12 10:07:00 +0200
committerRemy Bohmer <linux@bohmer.net>2010-04-08 21:40:00 +0200
commitfac71cc49f93db7d460dbc957dfbbadefa2ca0e9 (patch)
tree185f85830abc80e6d6e15fabdab23dbd60260a3e
parentaaad108b889c6980a2d05262a2f7febb14f94d68 (diff)
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USB storage probe
While debugging one ill behaving USB device I found two bugs in USB storage probe. usb_stor_get_info() returns -1 (error), 0 (skip) or 1 (ok). First part of this patch fixes error case. Second part fixes usb_inquiry()'s retry counter handling. Original code had retry = -1 on error case, not retry = 0 as checked in the next line. Signed-off-by: Kim B. Heino <Kim.Heino@bluegiga.com>
-rw-r--r--common/usb_storage.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/common/usb_storage.c b/common/usb_storage.c
index 239bddc..4fc01a2 100644
--- a/common/usb_storage.c
+++ b/common/usb_storage.c
@@ -244,7 +244,7 @@ int usb_stor_scan(int mode)
* get info and fill it in
*/
if (usb_stor_get_info(dev, &usb_stor[usb_max_devs],
- &usb_dev_desc[usb_max_devs]))
+ &usb_dev_desc[usb_max_devs]) == 1)
usb_max_devs++;
}
/* if storage device */
@@ -888,7 +888,7 @@ static int usb_inquiry(ccb *srb, struct us_data *ss)
USB_STOR_PRINTF("inquiry returns %d\n", i);
if (i == 0)
break;
- } while (retry--);
+ } while (--retry);
if (!retry) {
printf("error in inquiry\n");