From: Dan Carpenter dan.carpenter@oracle.com
[ Upstream commit fd47a417e75e2506eb3672ae569b1c87e3774155 ]
The problem is that sizeof() is unsigned long so negative error codes are type promoted to high positive values and the condition becomes false.
Fixes: 1d427be4a39d ("USB: legousbtower: fix slab info leak at probe") Signed-off-by: Dan Carpenter dan.carpenter@oracle.com Acked-by: Johan Hovold johan@kernel.org Link: https://lore.kernel.org/r/20191011141115.GA4521@mwanda Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/usb/misc/legousbtower.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/usb/misc/legousbtower.c b/drivers/usb/misc/legousbtower.c index 62dab2441ec4f..23061f1526b4e 100644 --- a/drivers/usb/misc/legousbtower.c +++ b/drivers/usb/misc/legousbtower.c @@ -878,7 +878,7 @@ static int tower_probe (struct usb_interface *interface, const struct usb_device get_version_reply, sizeof(*get_version_reply), 1000); - if (result < sizeof(*get_version_reply)) { + if (result != sizeof(*get_version_reply)) { if (result >= 0) result = -EIO; dev_err(idev, "get version request failed: %d\n", result);