diff options
| author | Jyri Sarha <jsarha@ti.com> | 2018-12-12 19:26:32 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-09-06 10:20:49 +0200 |
| commit | 0d9b9e89ae5a1aa20141fe41c3709149113c4b02 (patch) | |
| tree | 817fd43bf46da143d258b6fd8977cbabf9677ed0 | |
| parent | 99ab76dd3cc573315b7f4c287592ebd371daed38 (diff) | |
| download | linux-stable-0d9b9e89ae5a1aa20141fe41c3709149113c4b02.tar.gz linux-stable-0d9b9e89ae5a1aa20141fe41c3709149113c4b02.tar.bz2 linux-stable-0d9b9e89ae5a1aa20141fe41c3709149113c4b02.zip | |
drm/tilcdc: Register cpufreq notifier after we have initialized crtc
[ Upstream commit 432973fd3a20102840d5f7e61af9f1a03c217a4c ]
Register cpufreq notifier after we have initialized the crtc and
unregister it before we remove the ctrc. Receiving a cpufreq notify
without crtc causes a crash.
Reported-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Jyri Sarha <jsarha@ti.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/gpu/drm/tilcdc/tilcdc_drv.c | 34 |
1 files changed, 17 insertions, 17 deletions
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_drv.c b/drivers/gpu/drm/tilcdc/tilcdc_drv.c index b0d70f943cec..56039897607c 100644 --- a/drivers/gpu/drm/tilcdc/tilcdc_drv.c +++ b/drivers/gpu/drm/tilcdc/tilcdc_drv.c @@ -189,6 +189,12 @@ static void tilcdc_fini(struct drm_device *dev) { struct tilcdc_drm_private *priv = dev->dev_private; +#ifdef CONFIG_CPU_FREQ + if (priv->freq_transition.notifier_call) + cpufreq_unregister_notifier(&priv->freq_transition, + CPUFREQ_TRANSITION_NOTIFIER); +#endif + if (priv->crtc) tilcdc_crtc_shutdown(priv->crtc); @@ -204,12 +210,6 @@ static void tilcdc_fini(struct drm_device *dev) drm_mode_config_cleanup(dev); tilcdc_remove_external_device(dev); -#ifdef CONFIG_CPU_FREQ - if (priv->freq_transition.notifier_call) - cpufreq_unregister_notifier(&priv->freq_transition, - CPUFREQ_TRANSITION_NOTIFIER); -#endif - if (priv->clk) clk_put(priv->clk); @@ -282,17 +282,6 @@ static int tilcdc_init(struct drm_driver *ddrv, struct device *dev) goto init_failed; } -#ifdef CONFIG_CPU_FREQ - priv->freq_transition.notifier_call = cpufreq_transition; - ret = cpufreq_register_notifier(&priv->freq_transition, - CPUFREQ_TRANSITION_NOTIFIER); - if (ret) { - dev_err(dev, "failed to register cpufreq notifier\n"); - priv->freq_transition.notifier_call = NULL; - goto init_failed; - } -#endif - if (of_property_read_u32(node, "max-bandwidth", &priv->max_bandwidth)) priv->max_bandwidth = TILCDC_DEFAULT_MAX_BANDWIDTH; @@ -369,6 +358,17 @@ static int tilcdc_init(struct drm_driver *ddrv, struct device *dev) } modeset_init(ddev); +#ifdef CONFIG_CPU_FREQ + priv->freq_transition.notifier_call = cpufreq_transition; + ret = cpufreq_register_notifier(&priv->freq_transition, + CPUFREQ_TRANSITION_NOTIFIER); + if (ret) { + dev_err(dev, "failed to register cpufreq notifier\n"); + priv->freq_transition.notifier_call = NULL; + goto init_failed; + } +#endif + if (priv->is_componentized) { ret = component_bind_all(dev, ddev); if (ret < 0) |