ACK: [SRU] [E/F/Unstable/OEM-OSP1-B] [PATCH 0/1] Fix Nvidia's ucsi_ccg to make system be able to sleep

Sultan Alsawaf sultan.alsawaf at canonical.com
Mon Mar 30 18:01:15 UTC 2020


Acked-by: Sultan Alsawaf <sultan.alsawaf at canonical.com>

On Thu, Mar 26, 2020 at 09:05:01PM +0800, Kai-Heng Feng wrote:
> BugLink: https://bugs.launchpad.net/bugs/1850238
> 
> [Impact]
> Some systems have a "phantom" Nvidia UCSI, which prevent systems from
> suspending.
> 
> [Fix]
> ucsi_ccg is stuck in its probe routine because of the i2c bus never
> timeouts. Let it timeouts and probe can fail since it's just a phantom
> device.
> 
> [Test]
> After applying this patch system can suspend/resume succesfully.
> 
> [Regression Potential]
> Low. It's a trivial change to correctly handle timeout.
> 
> Kai-Heng Feng (1):
>   i2c: nvidia-gpu: Handle timeout correctly in gpu_i2c_check_status()
> 
>  drivers/i2c/busses/i2c-nvidia-gpu.c | 20 ++++++++------------
>  1 file changed, 8 insertions(+), 12 deletions(-)
> 
> -- 
> 2.17.1
> 
> 
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