| Message ID | 1457388054-23077-1-git-send-email-dianders@chromium.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On 2016?03?08? 06:00, Douglas Anderson wrote: > The drm_encoder_cleanup() was missing both from the error path of > dw_hdmi_rockchip_bind(). This caused a crash when slub_debug was > enabled and we ended up deferring probe of HDMI at boot. > > This call isn't needed from unbind() because if dw_hdmi_bind() returns > no error then it takes over the job of freeing the encoder (in > dw_hdmi_unbind). > > Signed-off-by: Douglas Anderson <dianders@chromium.org> Hi Douglas it seems has no doubt on these patch, and it works on my board, So I'd like to apply following three patches. [PATCH v2 1/5] drm/rockchip: dw_hdmi: Call drm_encoder_cleanup() in error path [PATCH v2 3/5] drm/rockchip: vop: Fix vop crtc cleanup [PATCH v2 4/5] drm/rockchip: dw_hdmi: Don't call platform_set_drvdata() Thanks for your fixes. -- ?ark Yao
diff --git a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c index 3d3cf2f8891e..88776aba984e 100644 --- a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c +++ b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c @@ -293,7 +293,16 @@ static int dw_hdmi_rockchip_bind(struct device *dev, struct device *master, drm_encoder_init(drm, encoder, &dw_hdmi_rockchip_encoder_funcs, DRM_MODE_ENCODER_TMDS, NULL); - return dw_hdmi_bind(dev, master, data, encoder, iores, irq, plat_data); + ret = dw_hdmi_bind(dev, master, data, encoder, iores, irq, plat_data); + + /* + * If dw_hdmi_bind() fails we'll never call dw_hdmi_unbind(), + * which would have called the encoder cleanup. Do it manually. + */ + if (ret) + drm_encoder_cleanup(encoder); + + return ret; } static void dw_hdmi_rockchip_unbind(struct device *dev, struct device *master,
The drm_encoder_cleanup() was missing both from the error path of dw_hdmi_rockchip_bind(). This caused a crash when slub_debug was enabled and we ended up deferring probe of HDMI at boot. This call isn't needed from unbind() because if dw_hdmi_bind() returns no error then it takes over the job of freeing the encoder (in dw_hdmi_unbind). Signed-off-by: Douglas Anderson <dianders@chromium.org> --- Changes in v2: None drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-)