[PATCH 4.11 20/78] drm/mediatek: fix mtk_hdmi_setup_vendor_specific_infoframe mistake

From: Greg Kroah-Hartman
Date: Mon Jun 19 2017 - 11:17:16 EST


4.11-stable review patch. If anyone has any objections, please let me know.

------------------

From: YYS <nickey.yang@xxxxxxxxxxxxxx>

commit 014580ffab654bb83256783a2b185cf6c06dffaa upstream.

mtk_hdmi_setup_vendor_specific_infoframe will return before handle
mtk_hdmi_hw_send_info_frame.Because hdmi_vendor_infoframe_pack
returns the number of bytes packed into the binary buffer or
a negative error code on failure.
So correct it.

Fixes: 8f83f26891e1 ("drm/mediatek: Add HDMI support")
Signed-off-by: Nickey Yang <nickey.yang@xxxxxxxxxxxxxx>
Signed-off-by: CK Hu <ck.hu@xxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

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

--- a/drivers/gpu/drm/mediatek/mtk_hdmi.c
+++ b/drivers/gpu/drm/mediatek/mtk_hdmi.c
@@ -1062,7 +1062,7 @@ static int mtk_hdmi_setup_vendor_specifi
}

err = hdmi_vendor_infoframe_pack(&frame, buffer, sizeof(buffer));
- if (err) {
+ if (err < 0) {
dev_err(hdmi->dev, "Failed to pack vendor infoframe: %zd\n",
err);
return err;