On Tue, 06 Jun 2023, Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx> wrote:
> Hi Siddh,
>
> Thank you for the patch.
>
> On Tue, Jun 06, 2023 at 04:15:15PM +0530, Siddh Raman Pant 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>
>> Reviewed-by: Jani Nikula <jani.nikula@xxxxxxxxx>
>> Signed-off-by: Siddh Raman Pant <code@xxxxxxxx>
>
> Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx>
>
> Any chance we could prevent this from happening by turning the macros
> into inline functions ?
Patch 2 adds static inline struct device *__drm_dev_ptr(const struct
drm_device *drm) which should tackle this.
BR,
Jani.
>
>> ---
>> 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 3fd6c733ff4e..a37af4edf394 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_alias_from_compatible(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", ®);
>> 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
