APPLIED(B,E): [PATCH 0/1][SRU][B][D][E][F] Dell AIO can't adjust brightness

[Khaled Elmously]

On 2020-01-08 15:59:44 , AceLan Kao wrote:
> BugLink: https://bugs.launchpad.net/bugs/1858761
> 
> [Impact]
> Found on new platforms that UART require more than 1 second to respond
> commands in the first 10 seconds after booted.
> And the first command we send to scalar is dell_uart_get_scalar_status()
> to tell if scalar is in charge of the backlight, and it always fails to get
> response because of timeout.
> 
> [Fix]
> Adding retry and increasing read timeout for dell_uart_get_scalar_status()
> 
> [Test]
> Verified on the target Dell AIO, it can now read the response from scalar.
> 
> [Regression Potential]
> Low, adding retry and increasing read timeout doesn't change the code flow.
> 
> AceLan Kao (1):
>   UBUNTU: SAUCE: platform/x86: dell-uart-backlight: add retry for get
>     scalar status
> 
>  drivers/platform/x86/dell-uart-backlight.c | 8 ++++++--
>  1 file changed, 6 insertions(+), 2 deletions(-)
> 
> -- 
> 2.17.1
> 
> 
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