kernel.git/drivers/media/platform/mtk-jpeg, branch linux-5.0.y

media: mtk-jpeg: Correct return type for mem2mem buffer helpers

2019-04-05T20:34:35Z

[ Upstream commit 1b275e4e8b70dbff9850874b30831c1bd8d3c504 ] Fix the assigned type of mem2mem buffer handling API. Namely, these functions: v4l2_m2m_next_buf v4l2_m2m_last_buf v4l2_m2m_buf_remove v4l2_m2m_next_src_buf v4l2_m2m_next_dst_buf v4l2_m2m_last_src_buf v4l2_m2m_last_dst_buf v4l2_m2m_src_buf_remove v4l2_m2m_dst_buf_remove return a struct vb2_v4l2_buffer, and not a struct vb2_buffer. Fixing this is necessary to fix the mem2mem buffer handling API, changing the return to the correct struct vb2_v4l2_buffer instead of a void pointer. Signed-off-by: Ezequiel Garcia Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Sasha Levin

media: use strscpy() instead of strlcpy()

2018-09-11T17:32:17Z

The implementation of strscpy() is more robust and safer. That's now the recommended way to copy NUL terminated strings. Signed-off-by: Mauro Carvalho Chehab Reviewed-by: Kees Cook Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

media: mem2mem: Make .job_abort optional

2018-07-24T21:45:08Z

Implementing job_abort() does not make sense on some drivers. This is not a problem, as the abort is not required to wait for the job to finish. Quite the opposite, drivers are encouraged not to wait. Demote v4l2_m2m_ops.job_abort from required to optional, and clean all drivers with dummy implementations. Signed-off-by: Ezequiel Garcia Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

media: vcodec: fix ptr_ret.cocci warnings

2018-05-09T19:58:30Z

drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c:1087:1-3: WARNING: PTR_ERR_OR_ZERO can be used Use PTR_ERR_OR_ZERO rather than if(IS_ERR(...)) + PTR_ERR Generated by: scripts/coccinelle/api/ptr_ret.cocci Fixes: 648a9576932a ("media: vcodec: fix error return value from mtk_jpeg_clk_init()") CC: Ryder Lee Signed-off-by: Fengguang Wu Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

media: vcodec: fix error return value from mtk_jpeg_clk_init()

2018-04-04T10:12:52Z

The error return value should be fixed as it may return EPROBE_DEFER. Cc: Bin Liu Signed-off-by: Ryder Lee Reviewed-by: Matthias Brugger Acked-by: Rick Chang Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

media: vcodec: mediatek: constify v4l2_m2m_ops structures

2017-08-20T12:03:55Z

The v4l2_m2m_ops structures are only passed as the only argument to v4l2_m2m_init, which is declared as const. Thus the v4l2_m2m_ops structures themselves can be const. Done with the help of Coccinelle. // @r disable optional_qualifier@ identifier i; position p; @@ static struct v4l2_m2m_ops i@p = { ... }; @ok1@ identifier r.i; position p; @@ v4l2_m2m_init(&i@p) @bad@ position p != {r.p,ok1.p}; identifier r.i; struct v4l2_m2m_ops e; @@ e@i@p @depends on !bad disable optional_qualifier@ identifier r.i; @@ static +const struct v4l2_m2m_ops i = { ... }; // Signed-off-by: Julia Lawall Acked-by: Rick Chang Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

media: mediatek: constify vb2_ops structure

2017-07-19T19:10:52Z

Check for vb2_ops structures that are only stored in the ops field of a vb2_queue structure. That field is declared const, so vb2_ops structures that have this property can be declared as const also. This issue was detected using Coccinelle and the following semantic patch: @r disable optional_qualifier@ identifier i; position p; @@ static struct vb2_ops i@p = { ... }; @ok@ identifier r.i; struct vb2_queue e; position p; @@ e.ops = &i@p; @bad@ position p != {r.p,ok.p}; identifier r.i; struct vb2_ops e; @@ e@i@p @depends on !bad disable optional_qualifier@ identifier r.i; @@ static +const struct vb2_ops i = { ... }; Signed-off-by: Gustavo A. R. Silva Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

[media] vcodec: mediatek: mark pm functions as __maybe_unused

2017-04-10T09:43:10Z

When CONFIG_PM is disabled, we get a couple of unused functions: drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c:927:13: error: 'mtk_jpeg_clk_off' defined but not used [-Werror=unused-function] static void mtk_jpeg_clk_off(struct mtk_jpeg_dev *jpeg) ^~~~~~~~~~~~~~~~ drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c:916:13: error: 'mtk_jpeg_clk_on' defined but not used [-Werror=unused-function] static void mtk_jpeg_clk_on(struct mtk_jpeg_dev *jpeg) Rather than adding more error-prone #ifdefs around those, this patch removes the existing #ifdef checks and marks the PM functions as __maybe_unused to let gcc do the right thing. Signed-off-by: Arnd Bergmann Acked-by: Rick Chang Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

[media] media: mtk-jpeg: fix continuous log "Context is NULL"

2017-04-05T18:08:26Z

The symptom is continuous log "mtk-jpeg 18004000.jpegdec: Context is NULL" in kernel log. It is because the error handling in irq doesn't clear interrupt. The calling flow like as below when issue happen mtk_jpeg_device_run() mtk_jpeg_job_abort() v4l2_m2m_job_finish() -> m2m_dev->curr_ctx = NULL; mtk_jpeg_dec_irq() v4l2_m2m_get_curr_priv() -> m2m_dev->curr_ctx == NULL -> return NULL log "Context is NULL" There is race condition between job_abort() and irq. In order to simplify code, don't want to add extra flag to maintain state, empty job_abort() and clear interrupt before v4l2_m2m_get_curr_priv() in irq. Signed-off-by: Minghsiu Tsai Acked-by: Rick Chang Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

[media] vcodec: mediatek: fix platform_no_drv_owner.cocci warnings

2017-03-22T14:37:07Z

drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c:1296:3-8: No need to set .owner here. The core will do it. Remove .owner field if calls are used which set it automatically Generated by: scripts/coccinelle/api/platform_no_drv_owner.cocci CC: Rick Chang Signed-off-by: Fengguang Wu Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab