On 16/10/2024 12:22, Mauro Carvalho Chehab wrote:

The logic at get_edid_tag_location() returns either an offset or an error condition. However, the error condition uses a non-standard "-1" value.

Use instead -ENOENT to indicate that the tag was not found.

Fixes: 056f2821b631 ("media: cec: extron-da-hd-4k-plus: add the Extron DA HD 4K Plus CEC driver")

Not a fix, since it isn't broken. It is returning an offset, and -1 is used if it isn't found. It's fine to change it to -ENOENT since the code calling it just checks if the result > 0.

So it is a slight improvement of the code, but not a fix.

Cc: stable@vger.kernel.org

So this isn't needed either.

Regards,

Hans

Signed-off-by: Mauro Carvalho Chehab mchehab+huawei@kernel.org

.../cec/usb/extron-da-hd-4k-plus/extron-da-hd-4k-plus.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/media/cec/usb/extron-da-hd-4k-plus/extron-da-hd-4k-plus.c b/drivers/media/cec/usb/extron-da-hd-4k-plus/extron-da-hd-4k-plus.c index a526464af88c..7d03a36df5cf 100644 --- a/drivers/media/cec/usb/extron-da-hd-4k-plus/extron-da-hd-4k-plus.c +++ b/drivers/media/cec/usb/extron-da-hd-4k-plus/extron-da-hd-4k-plus.c @@ -348,12 +348,12 @@ static int get_edid_tag_location(const u8 *edid, unsigned int size, /* Return if not a CTA-861 extension block */ if (size < 256 || edid[0] != 0x02 || edid[1] != 0x03)

• return -1;
  

• return -ENOENT;
  

/* search tag */ d = edid[0x02] & 0x7f; if (d <= 4)

• return -1;
  

• return -ENOENT;
  

i = 0x04; end = 0x00 + d; @@ -371,7 +371,7 @@ static int get_edid_tag_location(const u8 *edid, unsigned int size, return offset + i; i += len + 1; } while (i < end);

• return -1;

• return -ENOENT;

} static void extron_edid_crc(u8 *edid)