Re: [PATCH 1/4] gpu: Use dev_get_drvdata()

From: Laurent Pinchart
Date: Mon Jul 01 2019 - 09:32:21 EST

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Hi Fuqian,

Thank you for the pach.

On Mon, Jul 01, 2019 at 11:22:35AM +0800, Fuqian Huang wrote:
> Using dev_get_drvdata directly.

This could be expanded a bit. Maybe

"Several drivers cast a struct device pointer to a struct
platform_device pointer only to then call platform_get_drvdata(). These
constructs can be simplified by using dev_get_drvdata() directly."

I would also replace the "gpu: " prefix with "drm: " in the subject
line. With these small issues addressed,

Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>

> Signed-off-by: Fuqian Huang <huangfq.daxian@xxxxxxxxx>
> ---
> drivers/gpu/drm/msm/adreno/adreno_device.c | 6 ++----
> drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 13 +++++--------
> drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c | 6 ++----
> drivers/gpu/drm/msm/dsi/dsi_host.c | 6 ++----
> drivers/gpu/drm/msm/msm_drv.c | 3 +--
> drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c | 15 +++++----------
> drivers/gpu/drm/panfrost/panfrost_device.c | 6 ++----
> 7 files changed, 19 insertions(+), 36 deletions(-)
>
> diff --git a/drivers/gpu/drm/msm/adreno/adreno_device.c b/drivers/gpu/drm/msm/adreno/adreno_device.c
> index b3deb346a42b..fafd00d2574a 100644
> --- a/drivers/gpu/drm/msm/adreno/adreno_device.c
> +++ b/drivers/gpu/drm/msm/adreno/adreno_device.c
> @@ -403,16 +403,14 @@ static const struct of_device_id dt_match[] = {
> #ifdef CONFIG_PM
> static int adreno_resume(struct device *dev)
> {
> - struct platform_device *pdev = to_platform_device(dev);
> - struct msm_gpu *gpu = platform_get_drvdata(pdev);
> + struct msm_gpu *gpu = dev_get_drvdata(dev);
>
> return gpu->funcs->pm_resume(gpu);
> }
>
> static int adreno_suspend(struct device *dev)
> {
> - struct platform_device *pdev = to_platform_device(dev);
> - struct msm_gpu *gpu = platform_get_drvdata(pdev);
> + struct msm_gpu *gpu = dev_get_drvdata(dev);
>
> return gpu->funcs->pm_suspend(gpu);
> }
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
> index ae885e5dd07d..6c6f8ca9380f 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
> @@ -1025,16 +1025,15 @@ static int dpu_bind(struct device *dev, struct device *master, void *data)
>
> static void dpu_unbind(struct device *dev, struct device *master, void *data)
> {
> - struct platform_device *pdev = to_platform_device(dev);
> - struct dpu_kms *dpu_kms = platform_get_drvdata(pdev);
> + struct dpu_kms *dpu_kms = dev_get_drvdata(dev);
> struct dss_module_power *mp = &dpu_kms->mp;
>
> msm_dss_put_clk(mp->clk_config, mp->num_clk);
> - devm_kfree(&pdev->dev, mp->clk_config);
> + devm_kfree(dev, mp->clk_config);
> mp->num_clk = 0;
>
> if (dpu_kms->rpm_enabled)
> - pm_runtime_disable(&pdev->dev);
> + pm_runtime_disable(dev);
> }
>
> static const struct component_ops dpu_ops = {
> @@ -1056,8 +1055,7 @@ static int dpu_dev_remove(struct platform_device *pdev)
> static int __maybe_unused dpu_runtime_suspend(struct device *dev)
> {
> int rc = -1;
> - struct platform_device *pdev = to_platform_device(dev);
> - struct dpu_kms *dpu_kms = platform_get_drvdata(pdev);
> + struct dpu_kms *dpu_kms = dev_get_drvdata(dev);
> struct drm_device *ddev;
> struct dss_module_power *mp = &dpu_kms->mp;
>
> @@ -1077,8 +1075,7 @@ static int __maybe_unused dpu_runtime_suspend(struct device *dev)
> static int __maybe_unused dpu_runtime_resume(struct device *dev)
> {
> int rc = -1;
> - struct platform_device *pdev = to_platform_device(dev);
> - struct dpu_kms *dpu_kms = platform_get_drvdata(pdev);
> + struct dpu_kms *dpu_kms = dev_get_drvdata(dev);
> struct drm_encoder *encoder;
> struct drm_device *ddev;
> struct dss_module_power *mp = &dpu_kms->mp;
> diff --git a/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c b/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c
> index 901009e1f219..25d1ebb32e73 100644
> --- a/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c
> +++ b/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c
> @@ -1052,8 +1052,7 @@ static int mdp5_dev_remove(struct platform_device *pdev)
>
> static __maybe_unused int mdp5_runtime_suspend(struct device *dev)
> {
> - struct platform_device *pdev = to_platform_device(dev);
> - struct mdp5_kms *mdp5_kms = platform_get_drvdata(pdev);
> + struct mdp5_kms *mdp5_kms = dev_get_drvdata(dev);
>
> DBG("");
>
> @@ -1062,8 +1061,7 @@ static __maybe_unused int mdp5_runtime_suspend(struct device *dev)
>
> static __maybe_unused int mdp5_runtime_resume(struct device *dev)
> {
> - struct platform_device *pdev = to_platform_device(dev);
> - struct mdp5_kms *mdp5_kms = platform_get_drvdata(pdev);
> + struct mdp5_kms *mdp5_kms = dev_get_drvdata(dev);
>
> DBG("");
>
> diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c
> index dbf490176c2c..882f13725819 100644
> --- a/drivers/gpu/drm/msm/dsi/dsi_host.c
> +++ b/drivers/gpu/drm/msm/dsi/dsi_host.c
> @@ -477,8 +477,7 @@ static void dsi_bus_clk_disable(struct msm_dsi_host *msm_host)
>
> int msm_dsi_runtime_suspend(struct device *dev)
> {
> - struct platform_device *pdev = to_platform_device(dev);
> - struct msm_dsi *msm_dsi = platform_get_drvdata(pdev);
> + struct msm_dsi *msm_dsi = dev_get_drvdata(dev);
> struct mipi_dsi_host *host = msm_dsi->host;
> struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
>
> @@ -492,8 +491,7 @@ int msm_dsi_runtime_suspend(struct device *dev)
>
> int msm_dsi_runtime_resume(struct device *dev)
> {
> - struct platform_device *pdev = to_platform_device(dev);
> - struct msm_dsi *msm_dsi = platform_get_drvdata(pdev);
> + struct msm_dsi *msm_dsi = dev_get_drvdata(dev);
> struct mipi_dsi_host *host = msm_dsi->host;
> struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
>
> diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c
> index f38d7367bd3b..0d9e46561609 100644
> --- a/drivers/gpu/drm/msm/msm_drv.c
> +++ b/drivers/gpu/drm/msm/msm_drv.c
> @@ -241,8 +241,7 @@ static int vblank_ctrl_queue_work(struct msm_drm_private *priv,
>
> static int msm_drm_uninit(struct device *dev)
> {
> - struct platform_device *pdev = to_platform_device(dev);
> - struct drm_device *ddev = platform_get_drvdata(pdev);
> + struct drm_device *ddev = dev_get_drvdata(dev);
> struct msm_drm_private *priv = ddev->dev_private;
> struct msm_kms *kms = priv->kms;
> struct msm_mdss *mdss = priv->mdss;
> diff --git a/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c b/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c
> index 8edef8ef23b0..53240da139b1 100644
> --- a/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c
> +++ b/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c
> @@ -407,8 +407,7 @@ static const struct backlight_ops dsicm_bl_ops = {
> static ssize_t dsicm_num_errors_show(struct device *dev,
> struct device_attribute *attr, char *buf)
> {
> - struct platform_device *pdev = to_platform_device(dev);
> - struct panel_drv_data *ddata = platform_get_drvdata(pdev);
> + struct panel_drv_data *ddata = dev_get_drvdata(dev);
> struct omap_dss_device *src = ddata->src;
> u8 errors = 0;
> int r;
> @@ -439,8 +438,7 @@ static ssize_t dsicm_num_errors_show(struct device *dev,
> static ssize_t dsicm_hw_revision_show(struct device *dev,
> struct device_attribute *attr, char *buf)
> {
> - struct platform_device *pdev = to_platform_device(dev);
> - struct panel_drv_data *ddata = platform_get_drvdata(pdev);
> + struct panel_drv_data *ddata = dev_get_drvdata(dev);
> struct omap_dss_device *src = ddata->src;
> u8 id1, id2, id3;
> int r;
> @@ -506,8 +504,7 @@ static ssize_t dsicm_show_ulps(struct device *dev,
> struct device_attribute *attr,
> char *buf)
> {
> - struct platform_device *pdev = to_platform_device(dev);
> - struct panel_drv_data *ddata = platform_get_drvdata(pdev);
> + struct panel_drv_data *ddata = dev_get_drvdata(dev);
> unsigned int t;
>
> mutex_lock(&ddata->lock);
> @@ -521,8 +518,7 @@ static ssize_t dsicm_store_ulps_timeout(struct device *dev,
> struct device_attribute *attr,
> const char *buf, size_t count)
> {
> - struct platform_device *pdev = to_platform_device(dev);
> - struct panel_drv_data *ddata = platform_get_drvdata(pdev);
> + struct panel_drv_data *ddata = dev_get_drvdata(dev);
> struct omap_dss_device *src = ddata->src;
> unsigned long t;
> int r;
> @@ -553,8 +549,7 @@ static ssize_t dsicm_show_ulps_timeout(struct device *dev,
> struct device_attribute *attr,
> char *buf)
> {
> - struct platform_device *pdev = to_platform_device(dev);
> - struct panel_drv_data *ddata = platform_get_drvdata(pdev);
> + struct panel_drv_data *ddata = dev_get_drvdata(dev);
> unsigned int t;
>
> mutex_lock(&ddata->lock);
> diff --git a/drivers/gpu/drm/panfrost/panfrost_device.c b/drivers/gpu/drm/panfrost/panfrost_device.c
> index 3b2bced1b015..ed187648e6d8 100644
> --- a/drivers/gpu/drm/panfrost/panfrost_device.c
> +++ b/drivers/gpu/drm/panfrost/panfrost_device.c
> @@ -227,8 +227,7 @@ const char *panfrost_exception_name(struct panfrost_device *pfdev, u32 exception
> #ifdef CONFIG_PM
> int panfrost_device_resume(struct device *dev)
> {
> - struct platform_device *pdev = to_platform_device(dev);
> - struct panfrost_device *pfdev = platform_get_drvdata(pdev);
> + struct panfrost_device *pfdev = dev_get_drvdata(dev);
>
> panfrost_gpu_soft_reset(pfdev);
>
> @@ -243,8 +242,7 @@ int panfrost_device_resume(struct device *dev)
>
> int panfrost_device_suspend(struct device *dev)
> {
> - struct platform_device *pdev = to_platform_device(dev);
> - struct panfrost_device *pfdev = platform_get_drvdata(pdev);
> + struct panfrost_device *pfdev = dev_get_drvdata(dev);
>
> if (!panfrost_job_is_idle(pfdev))
> return -EBUSY;

--
Regards,

Laurent Pinchart

Next message: Christian Brauner: "Re: general protection fault in get_task_pid"
Previous message: Michal SuchÃnek: "Re: [PATCH] crypto: algapi - guard against uninitialized spawn list in crypto_remove_spawns"
In reply to: Emil Velikov: "Re: [PATCH 1/4] gpu: Use dev_get_drvdata()"
Next in thread: Jordan Crouse: "Re: [PATCH 1/4] gpu: Use dev_get_drvdata()"
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