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authorEvgeny Novikov <novikov@ispras.ru>2020-08-05 12:06:43 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2020-08-18 11:55:23 +0200
commit531412492ce93ea29b9ca3b4eb5e3ed771f851dd (patch)
treefbe7f494f57496190c36c8fbd9f6767ffb4ba4bb /drivers/usb/misc
parentf4b9d8a582f738c24ebeabce5cc15f4b8159d74e (diff)
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/misc')
-rw-r--r--drivers/usb/misc/lvstest.c2
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 */