On Fri, Sep 27, 2024 at 02:18:54AM GMT, [email protected] wrote:
> >
> >-----Original Message-----
> >From: Dmitry Baryshkov <[email protected]>
> >Sent: Thursday, September 26, 2024 4:07 PM
> >To: Hermes Wu (吳佳宏) <[email protected]>
> >Cc: Kenneth Hung (洪家倫) <[email protected]>; Andrzej Hajda
> ><[email protected]>; Neil Armstrong <[email protected]>;
> >Robert Foss <[email protected]>; Laurent Pinchart
> ><[email protected]>; Jonas Karlman <[email protected]>; Jernej
> >Skrabec <[email protected]>; Maarten Lankhorst
> ><[email protected]>; Maxime Ripard <[email protected]>;
> >Thomas Zimmermann <[email protected]>; David Airlie <[email protected]>;
> >Simona Vetter <[email protected]>; Allen Chen <[email protected]>;
> >AngeloGioacchino Del Regno <[email protected]>; open
> >list:DRM DRIVERS <[email protected]>; open list
> ><[email protected]>
> >Subject: Re: [PATCH v4 05/11] drm/bridge: it6505: increase supports of HDCP
> >repeater ksv devices
> >
> >On Thu, Sep 26, 2024 at 03:50:14PM GMT, Hermes Wu wrote:
> >> From: Hermes Wu <[email protected]>
> >>
> >> A HDCP source shall support max downstream device to 127.
> >>
> >> Change definition of MAX_HDCP_DOWN_STREAM_COUNT to 127
> >
> >This results in struct it6505 growth by ~0.5 KiB. Please mention it in the
> >commit message.
> >
> >Is it really required to have sha1_input in the constantly allocated
> >structure? I think it's a temporary data, which isn't necessary after
> >processing.
>
> Change sha1_input with dynamic memory into one commit or
>
> change to use temporary data in one and change definition of
> MAX_HDCP_DOWN_STREAM_COUN in another?
If it's needed during the lifetime, it's fine. Just explain the
necessity to grow the structure in the commit message.
>
> >>
> >> Fixes: b5c84a9edcd4 ("drm/bridge: add it6505 driver")
> >> Signed-off-by: Hermes Wu <[email protected]>
> >> ---
> >> drivers/gpu/drm/bridge/ite-it6505.c | 2 +-
> >> 1 file changed, 1 insertion(+), 1 deletion(-)
> >>
> >> diff --git a/drivers/gpu/drm/bridge/ite-it6505.c
> >> b/drivers/gpu/drm/bridge/ite-it6505.c
> >> index d1f5220e04a6..5d5ce12cd054 100644
> >> --- a/drivers/gpu/drm/bridge/ite-it6505.c
> >> +++ b/drivers/gpu/drm/bridge/ite-it6505.c
> >> @@ -296,7 +296,7 @@
> >> #define MAX_LANE_COUNT 4
> >> #define MAX_LINK_RATE HBR
> >> #define AUTO_TRAIN_RETRY 3
> >> -#define MAX_HDCP_DOWN_STREAM_COUNT 10
> >> +#define MAX_HDCP_DOWN_STREAM_COUNT 127
> >> #define MAX_CR_LEVEL 0x03
> >> #define MAX_EQ_LEVEL 0x03
> >> #define AUX_WAIT_TIMEOUT_MS 15
> >> --
> >> 2.34.1
> >>
> >
> >--
> >With best wishes
> >Dmitry
> >
>
> BR,
> Hermes
>
--
With best wishes
Dmitry
