Re: [PATCH v8 1/8] Revert "drm: mipi-dsi: Convert logging to drm_* functions."

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On Tue, 28 Feb 2023, Siddh Raman Pant <code@xxxxxxxx> wrote:
> This reverts commit 1040e424353f5f4d39f6f3aa8723eb3bd6ea6446.
>
> It used an incorrect way to use drm_* functions. Only drm_device ptrs
> should be passed, but the mentioned commit passed mipi_dsi_host ptr.
> It worked by accident due to macro magic.
>
> Reported-by: Jani Nikula <jani.nikula@xxxxxxxxxxxxxxx>
> Signed-off-by: Siddh Raman Pant <code@xxxxxxxx>

Reviewed-by: Jani Nikula <jani.nikula@xxxxxxxxx>

> ---
>  drivers/gpu/drm/drm_mipi_dsi.c | 15 ++++++++-------
>  1 file changed, 8 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/gpu/drm/drm_mipi_dsi.c b/drivers/gpu/drm/drm_mipi_dsi.c
> index 4bc15fbd009d..398fac95dfc0 100644
> --- a/drivers/gpu/drm/drm_mipi_dsi.c
> +++ b/drivers/gpu/drm/drm_mipi_dsi.c
> @@ -33,7 +33,6 @@
>  
>  #include <drm/display/drm_dsc.h>
>  #include <drm/drm_mipi_dsi.h>
> -#include <drm/drm_print.h>
>  
>  #include <video/mipi_display.h>
>  
> @@ -156,18 +155,19 @@ static int mipi_dsi_device_add(struct mipi_dsi_device *dsi)
>  static struct mipi_dsi_device *
>  of_mipi_dsi_device_add(struct mipi_dsi_host *host, struct device_node *node)
>  {
> +	struct device *dev = host->dev;
>  	struct mipi_dsi_device_info info = { };
>  	int ret;
>  	u32 reg;
>  
>  	if (of_modalias_node(node, info.type, sizeof(info.type)) < 0) {
> -		drm_err(host, "modalias failure on %pOF\n", node);
> +		dev_err(dev, "modalias failure on %pOF\n", node);
>  		return ERR_PTR(-EINVAL);
>  	}
>  
>  	ret = of_property_read_u32(node, "reg", &reg);
>  	if (ret) {
> -		drm_err(host, "device node %pOF has no valid reg property: %d\n",
> +		dev_err(dev, "device node %pOF has no valid reg property: %d\n",
>  			node, ret);
>  		return ERR_PTR(-EINVAL);
>  	}
> @@ -202,21 +202,22 @@ mipi_dsi_device_register_full(struct mipi_dsi_host *host,
>  			      const struct mipi_dsi_device_info *info)
>  {
>  	struct mipi_dsi_device *dsi;
> +	struct device *dev = host->dev;
>  	int ret;
>  
>  	if (!info) {
> -		drm_err(host, "invalid mipi_dsi_device_info pointer\n");
> +		dev_err(dev, "invalid mipi_dsi_device_info pointer\n");
>  		return ERR_PTR(-EINVAL);
>  	}
>  
>  	if (info->channel > 3) {
> -		drm_err(host, "invalid virtual channel: %u\n", info->channel);
> +		dev_err(dev, "invalid virtual channel: %u\n", info->channel);
>  		return ERR_PTR(-EINVAL);
>  	}
>  
>  	dsi = mipi_dsi_device_alloc(host);
>  	if (IS_ERR(dsi)) {
> -		drm_err(host, "failed to allocate DSI device %ld\n",
> +		dev_err(dev, "failed to allocate DSI device %ld\n",
>  			PTR_ERR(dsi));
>  		return dsi;
>  	}
> @@ -227,7 +228,7 @@ mipi_dsi_device_register_full(struct mipi_dsi_host *host,
>  
>  	ret = mipi_dsi_device_add(dsi);
>  	if (ret) {
> -		drm_err(host, "failed to add DSI device %d\n", ret);
> +		dev_err(dev, "failed to add DSI device %d\n", ret);
>  		kfree(dsi);
>  		return ERR_PTR(ret);
>  	}

-- 
Jani Nikula, Intel Open Source Graphics Center



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