Re: [PATCH v2 7/9] wifi: ath11k: Use RMW accessors for changing LNKCTL
From: Kalle Valo <kvalo@kernel.org>
Date: 2023-05-17 11:05:28
Also in:
ath11k, linux-pci, linux-wireless, lkml, stable
Ilpo Järvinen [off-list ref] 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@wunner.de>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Cc: stable@vger.kernel.orgAcked-by: Kalle Valo <kvalo@kernel.org> -- https://patchwork.kernel.org/project/linux-wireless/list/ https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches