From: YueHaibing Date: Tue, 19 Feb 2019 07:04:28 +0000 (+0800) Subject: tee: optee: Fix unsigned comparison with less than zero X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=62ade1bed27c26c2ea9280174ae6d6c7a9e825b2;p=linux.git tee: optee: Fix unsigned comparison with less than zero The return from the call to tee_client_invoke_func can be a negative error code however this is being assigned to an unsigned variable 'ret' hence the check is always false. Fix this by making 'ret' an int. Detected by Coccinelle ("Unsigned expression compared with zero: ret < 0") Fixes: c3fa24af9244 ("tee: optee: add TEE bus device enumeration support") Signed-off-by: YueHaibing Reviewed-by: Sumit Garg Signed-off-by: Arnd Bergmann --- diff --git a/drivers/tee/optee/device.c b/drivers/tee/optee/device.c index 167839b371f25..e3a148521ec1d 100644 --- a/drivers/tee/optee/device.c +++ b/drivers/tee/optee/device.c @@ -34,7 +34,7 @@ static int optee_ctx_match(struct tee_ioctl_version_data *ver, const void *data) static int get_devices(struct tee_context *ctx, u32 session, struct tee_shm *device_shm, u32 *shm_size) { - u32 ret = 0; + int ret = 0; struct tee_ioctl_invoke_arg inv_arg; struct tee_param param[4];