This isn't really accurate right. fread() doesn't always
return 0 in error. It could return < number of elements
and set errno.
Signed-off-by: GwanYeong Kim <gy741.kim@gmail.com>
Acked-by: Shuah Khan <skhan@linuxfoundation.org>
Link: https://lore.kernel.org/r/20191018032223.4644-1-gy741.kim@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
FILE *fd = NULL;
struct udev_device *plat;
const char *speed;
- int ret = 0;
+ size_t ret;
plat = udev_device_get_parent(sdev);
path = udev_device_get_syspath(plat);
if (!fd)
return -1;
ret = fread((char *) &descr, sizeof(descr), 1, fd);
- if (ret < 0)
+ if (ret != 1) {
+ err("Cannot read vudc device descr file: %s", strerror(errno));
goto err;
+ }
fclose(fd);
copy_descr_attr(dev, &descr, bDeviceClass);