Hi Noralf,
Thank you for the patch.
On Monday, 28 August 2017 20:17:46 EEST Noralf Trønnes wrote:
> Might as well embed drm_device since tinydrm_device (embeds pipe struct
> and fbdev pointer) needs to stick around after driver-device unbind to
> handle open fd's after device removal.
>
> Cc: David Lechner <david@xxxxxxxxxxxxxx>
> Signed-off-by: Noralf Trønnes <noralf@xxxxxxxxxxx>
> ---
> drivers/gpu/drm/tinydrm/core/tinydrm-core.c | 44 ++++++++++++-------------
> drivers/gpu/drm/tinydrm/core/tinydrm-pipe.c | 2 +-
> drivers/gpu/drm/tinydrm/mi0283qt.c | 8 +++---
> drivers/gpu/drm/tinydrm/mipi-dbi.c | 12 ++++----
> drivers/gpu/drm/tinydrm/repaper.c | 10 +++----
> drivers/gpu/drm/tinydrm/st7586.c | 16 +++++------
> include/drm/tinydrm/tinydrm.h | 9 +++++-
> 7 files changed, 50 insertions(+), 51 deletions(-)
>
> diff --git a/drivers/gpu/drm/tinydrm/core/tinydrm-core.c
> b/drivers/gpu/drm/tinydrm/core/tinydrm-core.c index 551709e..f11f4cd 100644
> --- a/drivers/gpu/drm/tinydrm/core/tinydrm-core.c
> +++ b/drivers/gpu/drm/tinydrm/core/tinydrm-core.c
[snip]
> @@ -142,23 +142,16 @@ static int tinydrm_init(struct device *parent, struct
> tinydrm_device *tdev, const struct drm_framebuffer_funcs *fb_funcs,
> struct drm_driver *driver)
> {
> - struct drm_device *drm;
> + struct drm_device *drm = &tdev->drm;
> + int ret;
>
> mutex_init(&tdev->dirty_lock);
> tdev->fb_funcs = fb_funcs;
>
> - /*
> - * We don't embed drm_device, because that prevent us from using
> - * devm_kzalloc() to allocate tinydrm_device in the driver since
> - * drm_dev_unref() frees the structure. The devm_ functions provide
> - * for easy error handling.
Don't you then need a custom drm_driver.release handler to free the parent
structure ?
> - */
> - drm = drm_dev_alloc(driver, parent);
> - if (IS_ERR(drm))
> - return PTR_ERR(drm);
> -
> - tdev->drm = drm;
> - drm->dev_private = tdev;
> + ret = drm_dev_init(drm, driver, parent);
> + if (ret)
> + return ret;
> +
> drm_mode_config_init(drm);
> drm->mode_config.funcs = &tinydrm_mode_config_funcs;
>
[snip]
> diff --git a/drivers/gpu/drm/tinydrm/mi0283qt.c
> b/drivers/gpu/drm/tinydrm/mi0283qt.c index 7e5bb7d..77d40c9 100644
> --- a/drivers/gpu/drm/tinydrm/mi0283qt.c
> +++ b/drivers/gpu/drm/tinydrm/mi0283qt.c
[snip]
> @@ -169,7 +169,7 @@ static int mi0283qt_probe(struct spi_device *spi)
> u32 rotation = 0;
> int ret;
>
> - mipi = devm_kzalloc(dev, sizeof(*mipi), GFP_KERNEL);
> + mipi = kzalloc(sizeof(*mipi), GFP_KERNEL);
Where's the related kfree() ?
> if (!mipi)
> return -ENOMEM;
[snip]
> diff --git a/drivers/gpu/drm/tinydrm/repaper.c
> b/drivers/gpu/drm/tinydrm/repaper.c index 30dc97b..b8fc8eb 100644
> --- a/drivers/gpu/drm/tinydrm/repaper.c
> +++ b/drivers/gpu/drm/tinydrm/repaper.c
[snip]
> @@ -949,7 +949,7 @@ static int repaper_probe(struct spi_device *spi)
> }
> }
>
> - epd = devm_kzalloc(dev, sizeof(*epd), GFP_KERNEL);
> + epd = kzalloc(sizeof(*epd), GFP_KERNEL);
Ditto.
> if (!epd)
> return -ENOMEM;
[snip]
> diff --git a/drivers/gpu/drm/tinydrm/st7586.c
> b/drivers/gpu/drm/tinydrm/st7586.c index b439956..bc2b905 100644
> --- a/drivers/gpu/drm/tinydrm/st7586.c
> +++ b/drivers/gpu/drm/tinydrm/st7586.c
[snip]
> @@ -349,7 +349,7 @@ static int st7586_probe(struct spi_device *spi)
> u32 rotation = 0;
> int ret;
>
> - mipi = devm_kzalloc(dev, sizeof(*mipi), GFP_KERNEL);
> + mipi = kzalloc(sizeof(*mipi), GFP_KERNEL);
Ang here again.
> if (!mipi)
> return -ENOMEM;
[snip]
--
Regards,
Laurent Pinchart
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