Re: [PATCH][next] media: rcar_jpu: remove redundant case statement when c is zero

[Dan Carpenter <dan.carpenter@xxxxxxxxxx>]

On Thu, May 08, 2025 at 11:08:35AM +0100, Colin Ian King wrote:
> The case statement where c is zero is redundant because the previous
> while loop will only exit if c is non-zero or non-0xff, so c can
> never be zero by the time the switch statement is reaced. Clean up
> the code by removing it.
> 
> Signed-off-by: Colin Ian King <colin.i.king@xxxxxxxxx>
> ---
>  drivers/media/platform/renesas/rcar_jpu.c | 2 --
>  1 file changed, 2 deletions(-)
> 

   612  
   613          for (;;) {
   614                  int c;
   615  
   616                  /* skip preceding filler bytes */
   617                  do
   618                          c = get_byte(&jpeg_buffer);
   619                  while (c == 0xff || c == 0);

Unrelated to your commit, but get_byte() returns -1 for out of
bounds.  I wish there were a explicit check for that.  We end
up hitting one of the "return 0;" statements depending on if
we've found a JPEG_MARKER_SOI.

regards,
dan carpenter