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SubjectRe: [PATCH 1/1] drm/rockchip: fix integer type used for storing dp data rate and lane count
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Am 09.01.20 um 01:15 schrieb Heiko Stübner:
> Am Mittwoch, 8. Januar 2020, 23:39:49 CET schrieb Tobias Schramm:
>> commit 2589c4025f13 ("drm/rockchip: Avoid drm_dp_link helpers") changes
>> the type of variables used to store the display port data rate and
>> number of lanes to u8. However u8 is not sufficient to store the link
>> data rate of the display port.
>> This commit reverts the type of both the number of lanes and the data
>> rate to unsigned int.
>>
>> Signed-off-by: Tobias Schramm <t.schramm@manjaro.org>
>> ---
>> drivers/gpu/drm/rockchip/cdn-dp-core.h | 4 ++--
>> 1 file changed, 2 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/rockchip/cdn-dp-core.h b/drivers/gpu/drm/rockchip/cdn-dp-core.h
>> index 83c4586665b4..806cb0b08982 100644
>> --- a/drivers/gpu/drm/rockchip/cdn-dp-core.h
>> +++ b/drivers/gpu/drm/rockchip/cdn-dp-core.h
>> @@ -94,8 +94,8 @@ struct cdn_dp_device {
>> struct video_info video_info;
>> struct cdn_dp_port *port[MAX_PHY];
>> u8 ports;
>> - u8 max_lanes;
>> - u8 max_rate;
>> + unsigned int max_lanes;
>
> although I would think u8 should be enough for max_lanes?
> There shouldn't be be more than 255 dp lanes?

True. I'll test and send a v2.

Thanks, Tobias

>
> Heiko
>
>> + unsigned int max_rate;
>> u8 lanes;
>> int active_port;
>>
>>
>
>
>
>
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