On 11/06/18 11:15, Mauro Carvalho Chehab wrote:
> As warned by gcc:
>
> drivers/staging/media/davinci_vpfe/dm365_ipipeif.c: In function
> 'ipipeif_hw_setup':
> drivers/staging/media/davinci_vpfe/dm365_ipipeif.c:298:3: warning: this
> statement may fall through [-Wimplicit-fallthrough=]
>switch (isif_port_if) {
>^~
> drivers/staging/media/davinci_vpfe/dm365_ipipeif.c:314:2: note: here
> case IPIPEIF_SDRAM_YUV:
> ^~~~
>
> There is a missing break for the raw format.
>
> Signed-off-by: Mauro Carvalho Chehab
Nacked-by: Hans Verkuil
It really should fall through: see this comment:
/* fall through for SDRAM YUV mode */
/* configure CFG2 */
val = ipipeif_read(ipipeif_base_addr, IPIPEIF_CFG2);
switch (isif_port_if) {
case MEDIA_BUS_FMT_YUYV8_1X16:
case MEDIA_BUS_FMT_UYVY8_2X8:
case MEDIA_BUS_FMT_Y8_1X8:
RESETBIT(val, IPIPEIF_CFG2_YUV8_SHIFT);
SETBIT(val, IPIPEIF_CFG2_YUV16_SHIFT);
ipipeif_write(val, ipipeif_base_addr, IPIPEIF_CFG2);
break;
default:
RESETBIT(val, IPIPEIF_CFG2_YUV8_SHIFT);
RESETBIT(val, IPIPEIF_CFG2_YUV16_SHIFT);
ipipeif_write(val, ipipeif_base_addr, IPIPEIF_CFG2);
break;
}
case IPIPEIF_SDRAM_YUV:
So we need a proper /* fall through */ comment instead of a break.
In the SDRAM_YUV case the SDRAM clock divider is configured, and that needs
to be done for both SDRAM_* cases.
Regards,
Hans
> ---
> drivers/staging/media/davinci_vpfe/dm365_ipipeif.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/staging/media/davinci_vpfe/dm365_ipipeif.c
> b/drivers/staging/media/davinci_vpfe/dm365_ipipeif.c
> index a53231b08d30..975272bcf8ca 100644
> --- a/drivers/staging/media/davinci_vpfe/dm365_ipipeif.c
> +++ b/drivers/staging/media/davinci_vpfe/dm365_ipipeif.c
> @@ -310,6 +310,7 @@ static int ipipeif_hw_setup(struct v4l2_subdev *sd)
> ipipeif_write(val, ipipeif_base_addr, IPIPEIF_CFG2);
> break;
> }
> + break;
>
> case IPIPEIF_SDRAM_YUV:
> /* Set clock divider */
>
