From: Alan Cox Date: Mon, 21 May 2012 14:27:44 +0000 (+0100) Subject: gma500: Fix Poulsbo suspend/resume crash on devices with SDVO ports X-Git-Tag: firefly_0821_release~3680^2~2778^2~20 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=7beff62ee39d3ccf088bb77f61a63037f714d235;p=firefly-linux-kernel-4.4.55.git gma500: Fix Poulsbo suspend/resume crash on devices with SDVO ports Reported-by: Guillaume Clément Signed-off-by: Alan Cox Cc: stable@vger.kernel.org Signed-off-by: Dave Airlie --- diff --git a/drivers/gpu/drm/gma500/psb_device.c b/drivers/gpu/drm/gma500/psb_device.c index 2a3e2da4ea8e..eff039bf92d4 100644 --- a/drivers/gpu/drm/gma500/psb_device.c +++ b/drivers/gpu/drm/gma500/psb_device.c @@ -197,7 +197,8 @@ static int psb_save_display_registers(struct drm_device *dev) } list_for_each_entry(connector, &dev->mode_config.connector_list, head) - connector->funcs->save(connector); + if (connector->funcs->save) + connector->funcs->save(connector); mutex_unlock(&dev->mode_config.mutex); return 0; @@ -235,7 +236,8 @@ static int psb_restore_display_registers(struct drm_device *dev) crtc->funcs->restore(crtc); list_for_each_entry(connector, &dev->mode_config.connector_list, head) - connector->funcs->restore(connector); + if (connector->funcs->restore) + connector->funcs->restore(connector); mutex_unlock(&dev->mode_config.mutex); return 0;