Hi,
On Sat, Nov 10, 2018 at 01:16:52PM +0200, Laurent Pinchart wrote:
The bind function performs hardware access (in hdmi4_cec_init()) and thus requires the device to be active. Ensure this by surrounding the bind function by hdmi_runtime_get() and hdmi_runtime_put() calls.
Fixes: 27d624527d99 ("drm/omap: dss: Acquire next dssdev at probe time") Signed-off-by: Laurent Pinchart laurent.pinchart@ideasonboard.com
Reviewed-by: Sebastian Reichel sebastian.reichel@collabora.com
-- Sebastian
Changes since v2:
- Call hdmi_runtime_put() instead of hdmi_runtime_get() in error path
drivers/gpu/drm/omapdrm/dss/hdmi4.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/omapdrm/dss/hdmi4.c b/drivers/gpu/drm/omapdrm/dss/hdmi4.c index cf6230eac31a..073fa462930a 100644 --- a/drivers/gpu/drm/omapdrm/dss/hdmi4.c +++ b/drivers/gpu/drm/omapdrm/dss/hdmi4.c @@ -635,10 +635,14 @@ static int hdmi4_bind(struct device *dev, struct device *master, void *data)
hdmi->dss = dss;
- r = hdmi_pll_init(dss, hdmi->pdev, &hdmi->pll, &hdmi->wp);
r = hdmi_runtime_get(hdmi); if (r) return r;
r = hdmi_pll_init(dss, hdmi->pdev, &hdmi->pll, &hdmi->wp);
if (r)
goto err_runtime_put;r = hdmi4_cec_init(hdmi->pdev, &hdmi->core, &hdmi->wp); if (r) goto err_pll_uninit;
@@ -652,12 +656,16 @@ static int hdmi4_bind(struct device *dev, struct device *master, void *data) hdmi->debugfs = dss_debugfs_create_file(dss, "hdmi", hdmi_dump_regs, hdmi);
- hdmi_runtime_put(hdmi);
- return 0;
err_cec_uninit: hdmi4_cec_uninit(&hdmi->core); err_pll_uninit: hdmi_pll_uninit(&hdmi->pll); +err_runtime_put:
- hdmi_runtime_put(hdmi); return r;
}
-- Regards,
Laurent Pinchart