glx: Log the filename of the drm device if we fail to open it

Helps point the user to the specific device that's having issues, since
you're increasingly likely to have more than one.

Gitlab: https://gitlab.freedesktop.org/mesa/mesa/issues/107
Reviewed-by: Eric Anholt <eric@anholt.net>

diff --git a/src/glx/dri2_glx.c b/src/glx/dri2_glx.c
index bed25bb38d609b40334234d270c2bf4188a42c15..d2a9c881357c75b9ab3783ccd2e440a68fe57c0a 100644 (file)
--- a/src/glx/dri2_glx.c
+++ b/src/glx/dri2_glx.c
@@ -1244,7 +1244,7 @@ dri2CreateScreen(int screen, struct glx_display * priv)
 
    psc->fd = loader_open_device(deviceName);
    if (psc->fd < 0) {
-      ErrorMessageF("failed to open drm device: %s\n", strerror(errno));
+      ErrorMessageF("failed to open %s: %s\n", deviceName, strerror(errno));
       goto handle_error;
    }