target/linux/brcm2708/patches-4.4/0295-drm-vc4-Let-gpiolib-know-that-we-re-OK-with-sleeping.patch

   1 From 10f0d3fb0d155b0a6837f56a5e6a663a33d003ba Mon Sep 17 00:00:00 2001
   2 From: Eric Anholt <eric@anholt.net>
   3 Date: Mon, 29 Feb 2016 17:53:00 -0800
   4 Subject: [PATCH 295/304] drm/vc4: Let gpiolib know that we're OK with sleeping
   5  for HPD.
   6
   7 Fixes an error thrown every few seconds when we poll HPD when it's on
   8 a I2C to GPIO expander.
   9
  10 Signed-off-by: Eric Anholt <eric@anholt.net>
  11 Tested-by: Daniel Stone <daniels@collabora.com>
  12 (cherry picked from commit 0e60eab57557bc06bb3a5ef8d5d6dcd9ddd47aff)
  13 ---
  14  drivers/gpu/drm/vc4/vc4_hdmi.c | 2 +-
  15  1 file changed, 1 insertion(+), 1 deletion(-)
  16
  17 --- a/drivers/gpu/drm/vc4/vc4_hdmi.c
  18 +++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
  19 @@ -168,7 +168,7 @@ vc4_hdmi_connector_detect(struct drm_con
  20         return connector_status_connected;
  21
  22         if (vc4->hdmi->hpd_gpio) {
  23 -               if (gpio_get_value(vc4->hdmi->hpd_gpio))
  24 +               if (gpio_get_value_cansleep(vc4->hdmi->hpd_gpio))
  25                         return connector_status_connected;
  26                 else
  27                         return connector_status_disconnected;