Re: [PATCH v3] i2c: nvidia-gpu: Handle timeout correctly in gpu_i2c_check_status()

[Wolfram Sang]

On Tue, Mar 24, 2020 at 11:28:11PM +0800, Kai-Heng Feng wrote:
> Nvidia card may come with a "phantom" UCSI device, and its driver gets
> stuck in probe routine, prevents any system PM operations like suspend.
> 
> There's an unaccounted case that the target time can equal to jiffies in
> gpu_i2c_check_status(), let's solve that by using readl_poll_timeout()
> instead of jiffies comparison functions. 
> 
> Fixes: c71bcdcb42a7 ("i2c: add i2c bus driver for NVIDIA GPU")
> Suggested-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
> Signed-off-by: Kai-Heng Feng <kai.heng.feng@xxxxxxxxxxxxx>

Looks good to me, thanks Andy for the suggestion!

Waiting for the Rev-by from Ajay (driver maintainer).

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