intel: Do strerror on errno, not on the -1 return value from ioctl.

diff --git a/libdrm/intel/intel_bufmgr_gem.c b/libdrm/intel/intel_bufmgr_gem.c
index 97e387f..cd36cdc 100644 (file)
--- a/libdrm/intel/intel_bufmgr_gem.c
+++ b/libdrm/intel/intel_bufmgr_gem.c
@@ -357,7 +357,7 @@ intel_bo_gem_create_from_name(dri_bufmgr *bufmgr, const char *name,
     ret = ioctl(bufmgr_gem->fd, DRM_IOCTL_GEM_OPEN, &open_arg);
     if (ret != 0) {
        fprintf(stderr, "Couldn't reference %s handle 0x%08x: %s\n",
-              name, handle, strerror(-ret));
+              name, handle, strerror(errno));
        free(bo_gem);
        return NULL;
     }
@@ -401,7 +401,7 @@ dri_gem_bo_free(dri_bo *bo)
     if (ret != 0) {
        fprintf(stderr,
                "DRM_IOCTL_GEM_CLOSE %d failed (%s): %s\n",
-               bo_gem->gem_handle, bo_gem->name, strerror(-ret));
+               bo_gem->gem_handle, bo_gem->name, strerror(errno));
     }
     free(bo);
 }