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| author |   Evgeny Novikov <novikov@ispras.ru> | 2020-08-05 12:06:43 +0300 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-08-18 11:55:23 +0200 |
| commit | 531412492ce93ea29b9ca3b4eb5e3ed771f851dd (patch) | |
| tree | fbe7f494f57496190c36c8fbd9f6767ffb4ba4bb /drivers/usb | |
| parent | USB: cdc-acm: rework notification_buffer resizing (diff) | |
| download | wireguard-linux-531412492ce93ea29b9ca3b4eb5e3ed771f851dd.tar.xz wireguard-linux-531412492ce93ea29b9ca3b4eb5e3ed771f851dd.zip | |
USB: lvtest: return proper error code in probe
lvs_rh_probe() can return some nonnegative value from usb_control_msg()
when it is less than "USB_DT_HUB_NONVAR_SIZE + 2" that is considered as
a failure. Make lvs_rh_probe() return -EINVAL in this case.
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Evgeny Novikov <novikov@ispras.ru>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20200805090643.3432-1-novikov@ispras.ru
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/misc/lvstest.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/usb/misc/lvstest.c b/drivers/usb/misc/lvstest.c index 407fe7570f3b..f8686139d6f3 100644 --- a/drivers/usb/misc/lvstest.c +++ b/drivers/usb/misc/lvstest.c @@ -426,7 +426,7 @@ static int lvs_rh_probe(struct usb_interface *intf, USB_DT_SS_HUB_SIZE, USB_CTRL_GET_TIMEOUT); if (ret < (USB_DT_HUB_NONVAR_SIZE + 2)) { dev_err(&hdev->dev, "wrong root hub descriptor read %d\n", ret); - return ret; + return ret < 0 ? ret : -EINVAL; } /* submit urb to poll interrupt endpoint */ |