drmPrime*: initialize output args to 0

Fix Valgrind errors because those memory was uninitialized.

https://bugs.freedesktop.org/show_bug.cgi?id=90194
Signed-off-by: Guillaume Desmottes <guillaume.desmottes@collabora.co.uk>
v2: Explicitly zero the whole struct using memclear.
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>

diff --git a/xf86drm.c b/xf86drm.c
index 0a66a4a..49da9c7 100644 (file)
--- a/xf86drm.c
+++ b/xf86drm.c
@@ -2721,6 +2721,8 @@ int drmPrimeHandleToFD(int fd, uint32_t handle, uint32_t flags, int *prime_fd)
        struct drm_prime_handle args;
        int ret;
 
+       memclear(args);
+       args.fd = -1;
        args.handle = handle;
        args.flags = flags;
        ret = drmIoctl(fd, DRM_IOCTL_PRIME_HANDLE_TO_FD, &args);
@@ -2736,8 +2738,8 @@ int drmPrimeFDToHandle(int fd, int prime_fd, uint32_t *handle)
        struct drm_prime_handle args;
        int ret;
 
+       memclear(args);
        args.fd = prime_fd;
-       args.flags = 0;
        ret = drmIoctl(fd, DRM_IOCTL_PRIME_FD_TO_HANDLE, &args);
        if (ret)
                return ret;