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

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>

diff --git a/drivers/media/platform/rcar_fdp1.c b/drivers/media/platform/rcar_fdp1.c
index 674cc1309b436b963b313e7102e789a4be966316..42f25d241edd7c40548842a2e2fb940002030b68 100644 (file)
--- a/drivers/media/platform/rcar_fdp1.c
+++ b/drivers/media/platform/rcar_fdp1.c
@@ -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);