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
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