Re: [PATCH net 2/2] net: ipa: prevent concurrent replenish

[Matthias Kaehlcke]

On Tue, Jan 11, 2022 at 01:21:50PM -0600, Alex Elder wrote:
> We have seen cases where an endpoint RX completion interrupt arrives
> while replenishing for the endpoint is underway.  This causes another
> instance of replenishing to begin as part of completing the receive
> transaction.  If this occurs it can lead to transaction corruption.
> 
> Use a new atomic variable to ensure only replenish instance for an
> endpoint executes at a time.
> 
> Fixes: 84f9bd12d46db ("soc: qcom: ipa: IPA endpoints")
> Signed-off-by: Alex Elder <elder@xxxxxxxxxx>

Reviewed-by: Matthias Kaehlcke <mka@xxxxxxxxxxxx>