[PATCH V6 8/9] usb: return error when fail to get usb device descriptor in the usb_get_configuration()

[Lan Tianyu <tianyu.lan@xxxxxxxxx>]

Since port may power off, usb device descriptor can't be get
at that time and usb_get_configuration() should return error.

Signed-off-by: Lan Tianyu <tianyu.lan@xxxxxxxxx>
---
 drivers/usb/core/config.c |    4 +---
 1 files changed, 1 insertions(+), 3 deletions(-)

diff --git a/drivers/usb/core/config.c b/drivers/usb/core/config.c
index f4bdd0c..072e8a2 100644
--- a/drivers/usb/core/config.c
+++ b/drivers/usb/core/config.c
@@ -702,9 +702,7 @@ int usb_get_configuration(struct usb_device *dev)
 		if (result < 0) {
 			dev_err(ddev, "unable to read config index %d "
 			    "descriptor/%s: %d\n", cfgno, "start", result);
-			dev_err(ddev, "chopping to %d config(s)\n", cfgno);
-			dev->descriptor.bNumConfigurations = cfgno;
-			break;
+			goto err;
 		} else if (result < 4) {
 			dev_err(ddev, "config index %d descriptor too short "
 			    "(expected %i, got %i)\n", cfgno,
-- 
1.7.6.rc2.8.g28eb

--
To unsubscribe from this list: send the line "unsubscribe linux-usb" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html