intel: ioctl is not defined to return -errno

Don't count on ioctl returning -errno; use errno directly.

Signed-off-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Eric Anholt <eric@anholt.net>

diff --git a/libdrm/intel/intel_bufmgr_gem.c b/libdrm/intel/intel_bufmgr_gem.c
index 33853c4..081eb2a 100644 (file)
--- a/libdrm/intel/intel_bufmgr_gem.c
+++ b/libdrm/intel/intel_bufmgr_gem.c
@@ -790,7 +790,7 @@ dri_gem_bo_exec(dri_bo *bo, int used,
 
     do {
        ret = ioctl(bufmgr_gem->fd, DRM_IOCTL_I915_GEM_EXECBUFFER, &execbuf);
-    } while (ret == -EAGAIN);
+    } while (ret != 0 && errno == EAGAIN);
 
     intel_update_buffer_offsets (bufmgr_gem);