Re: [PATCH v2 1/1] ucsi_ccg: Check DEV_INT bit only when starting CCG4

From: Greg KH
Date: Tue Jan 11 2022 - 09:04:06 EST


On Tue, Jan 11, 2022 at 09:36:43PM +0800, Wayne Chang wrote:
> From: Sing-Han Chen <singhanc@xxxxxxxxxx>
>
> after driver sending the UCSI_START cmd, CCGx would
> clear Bit 0:Device Interrupt in the INTR_REG if CCGX
> reset successfully.
>
> however, there might be a chance that other bits in
> INTR_REG are not cleared due to internal data queued
> in PPM and cause the driver thinks CCGx reset failed.
>
> the commit checks bit 0 in INTR_REG and ignore other
> bits. ucsi driver would reset PPM later.
>
> Signed-off-by: Sing-Han Chen <singhanc@xxxxxxxxxx>
> Signed-off-by: Wayne Chang <waynec@xxxxxxxxxx>
> ---
> drivers/usb/typec/ucsi/ucsi_ccg.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)

What commit id does this fix?

thanks,

greg k-h