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[media] v4l: rcar_fdp1: use %4.4s to format a 4-byte string

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Using %4s to format f->fmt.pix_mp.pixelformat in fdp1_try_fmt() and
fdp1_s_fmt() may lead to more characters being printed (when the byte
following field pixelformat is not zero).

Add ".4" to the format specifier to limit the number of printed
characters to four. The resulting format specifier "%4.4s" is also used
by other media drivers to print pixelformat value.

Signed-off-by: Nicolas Iooss <nicolas.iooss_linux@m4x.org>
Reviewed-by: Kieran Bingham <kieran@bingham.xyz>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Nicolas Iooss
2016-12-26 11:31:39 -02:00
committed by Mauro Carvalho Chehab
父節點 d615128a7e
當前提交 4c171636bc
共有 1 個文件被更改，包括 2 次插入 和 2 次删除
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4
drivers/media/platform/rcar_fdp1.c
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@@ -1596,7 +1596,7 @@ static int fdp1_try_fmt(struct file *file, void *priv, struct v4l2_format *f)
else
fdp1_try_fmt_capture(ctx, NULL, &f->fmt.pix_mp);
dprintk(ctx->fdp1, "Try %s format: %4s (0x%08x) %ux%u field %u\n",
dprintk(ctx->fdp1, "Try %s format: %4.4s (0x%08x) %ux%u field %u\n",
V4L2_TYPE_IS_OUTPUT(f->type) ? "output" : "capture",
(char *)&f->fmt.pix_mp.pixelformat, f->fmt.pix_mp.pixelformat,
f->fmt.pix_mp.width, f->fmt.pix_mp.height, f->fmt.pix_mp.field);
@@ -1671,7 +1671,7 @@ static int fdp1_s_fmt(struct file *file, void *priv, struct v4l2_format *f)
fdp1_set_format(ctx, &f->fmt.pix_mp, f->type);
dprintk(ctx->fdp1, "Set %s format: %4s (0x%08x) %ux%u field %u\n",
dprintk(ctx->fdp1, "Set %s format: %4.4s (0x%08x) %ux%u field %u\n",
V4L2_TYPE_IS_OUTPUT(f->type) ? "output" : "capture",
(char *)&f->fmt.pix_mp.pixelformat, f->fmt.pix_mp.pixelformat,
f->fmt.pix_mp.width, f->fmt.pix_mp.height, f->fmt.pix_mp.field);