[PATCH v2 7/9] wifi: ath11k: Use RMW accessors for changing LNKCTL

[Kalle Valo]

Ilpo Järvinen <ilpo.jarvinen at linux.intel.com> writes:

> Don't assume that only the driver would be accessing LNKCTL. ASPM
> policy changes can trigger write to LNKCTL outside of driver's control.
>
> Use RMW capability accessors which do proper locking to avoid losing
> concurrent updates to the register value. On restore, clear the ASPMC
> field properly.
>
> Fixes: e9603f4bdcc0 ("ath11k: pci: disable ASPM L0sLs before downloading firmware")
> Suggested-by: Lukas Wunner <lukas at wunner.de>
> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen at linux.intel.com>
> Cc: stable at vger.kernel.org

Acked-by: Kalle Valo <kvalo at kernel.org>

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