Re: [PATCH] staging: media: meson: vdec: matched alignment with parenthesis

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On Fri, 2021-04-09 at 09:30 +0200, Hans Verkuil wrote:
> On 09/04/2021 00:19, Mitali Borkar wrote:
> > Matched alignment with open parenthesis to meet linux kernel coding
> > style.
> > Reported by checkpatch
> > 
> > Signed-off-by: Mitali Borkar <mitaliborkar810@xxxxxxxxx>
> > ---
> >  drivers/staging/media/meson/vdec/codec_mpeg12.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/drivers/staging/media/meson/vdec/codec_mpeg12.c b/drivers/staging/media/meson/vdec/codec_mpeg12.c
> > index 48869cc3d973..21e93a13356c 100644
> > --- a/drivers/staging/media/meson/vdec/codec_mpeg12.c
> > +++ b/drivers/staging/media/meson/vdec/codec_mpeg12.c
> > @@ -81,7 +81,7 @@ static int codec_mpeg12_start(struct amvdec_session *sess)
> >  	}
> >  
> > 
> >  	ret = amvdec_set_canvases(sess, (u32[]){ AV_SCRATCH_0, 0 },
> > -					(u32[]){ 8, 0 });
> > +				  (u32[]){ 8, 0 });
> 
> The alignment here is because the 2nd and 3rd arguments belong together, so
> the alignment indicates that. In order to keep that I would add a newline
> after 'sess,' as well. Same as is done in meson/vdec/codec_h264.c.

Perhaps better as:

---
 drivers/staging/media/meson/vdec/codec_mpeg12.c | 5 +++--
 drivers/staging/media/meson/vdec/vdec_helpers.c | 2 +-
 drivers/staging/media/meson/vdec/vdec_helpers.h | 2 +-
 3 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/staging/media/meson/vdec/codec_mpeg12.c b/drivers/staging/media/meson/vdec/codec_mpeg12.c
index 48869cc3d973..933f1cd16ce1 100644
--- a/drivers/staging/media/meson/vdec/codec_mpeg12.c
+++ b/drivers/staging/media/meson/vdec/codec_mpeg12.c
@@ -65,6 +65,8 @@ static int codec_mpeg12_start(struct amvdec_session *sess)
 	struct amvdec_core *core = sess->core;
 	struct codec_mpeg12 *mpeg12;
 	int ret;
+	static const u32 canvas1[] = { AV_SCRATCH_0, 0 };
+	static const u32 canvas2[] = { 8, 0 };
 
 	mpeg12 = kzalloc(sizeof(*mpeg12), GFP_KERNEL);
 	if (!mpeg12)
@@ -80,8 +82,7 @@ static int codec_mpeg12_start(struct amvdec_session *sess)
 		goto free_mpeg12;
 	}
 
-	ret = amvdec_set_canvases(sess, (u32[]){ AV_SCRATCH_0, 0 },
-					(u32[]){ 8, 0 });
+	ret = amvdec_set_canvases(sess, canvas1, canvas2);
 	if (ret)
 		goto free_workspace;
 
diff --git a/drivers/staging/media/meson/vdec/vdec_helpers.c b/drivers/staging/media/meson/vdec/vdec_helpers.c
index 7f07a9175815..df5c27266c44 100644
--- a/drivers/staging/media/meson/vdec/vdec_helpers.c
+++ b/drivers/staging/media/meson/vdec/vdec_helpers.c
@@ -177,7 +177,7 @@ static int set_canvas_nv12m(struct amvdec_session *sess,
 }
 
 int amvdec_set_canvases(struct amvdec_session *sess,
-			u32 reg_base[], u32 reg_num[])
+			const u32 reg_base[], const u32 reg_num[])
 {
 	struct v4l2_m2m_buffer *buf;
 	u32 pixfmt = sess->pixfmt_cap;
diff --git a/drivers/staging/media/meson/vdec/vdec_helpers.h b/drivers/staging/media/meson/vdec/vdec_helpers.h
index cfaed52ab526..ace8897c34fe 100644
--- a/drivers/staging/media/meson/vdec/vdec_helpers.h
+++ b/drivers/staging/media/meson/vdec/vdec_helpers.h
@@ -17,7 +17,7 @@
  * @reg_num: number of contiguous registers after each reg_base (including it)
  */
 int amvdec_set_canvases(struct amvdec_session *sess,
-			u32 reg_base[], u32 reg_num[]);
+			const u32 reg_base[], const u32 reg_num[]);
 
 /* Helpers to read/write to the various IPs (DOS, PARSER) */
 u32 amvdec_read_dos(struct amvdec_core *core, u32 reg);





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