[PATCH 5.2 32/85] drm/lima: fix lima_gem_wait() return value

[Greg Kroah-Hartman]

From: Vasily Khoruzhick <anars...@gmail.com>

commit 21670bd78a25001cf8ef2679b378c73fb73b904f upstream.

drm_gem_reservation_object_wait() returns 0 if it succeeds and -ETIME
if it timeouts, but lima driver assumed that 0 is error.

Cc: sta...@vger.kernel.org
Fixes: a1d2a6339961e ("drm/lima: driver for ARM Mali4xx GPUs")
Signed-off-by: Vasily Khoruzhick <anars...@gmail.com>
Signed-off-by: Qiang Yu <yuq...@gmail.com>
Link: 
https://patchwork.freedesktop.org/patch/msgid/20190908024800.23229-1-anars...@gmail.com
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>

---
 drivers/gpu/drm/lima/lima_gem.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/gpu/drm/lima/lima_gem.c
+++ b/drivers/gpu/drm/lima/lima_gem.c
@@ -342,7 +342,7 @@ int lima_gem_wait(struct drm_file *file,
        timeout = drm_timeout_abs_to_jiffies(timeout_ns);
 
        ret = drm_gem_reservation_object_wait(file, handle, write, timeout);
-       if (ret == 0)
+       if (ret == -ETIME)
                ret = timeout ? -ETIMEDOUT : -EBUSY;
 
        return ret;