21 Jun
2023
21 Jun
'23
2:47 p.m.
On Tue, Jun 20, 2023 at 04:46:23PM +0300, Ilpo Järvinen wrote:
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: d889913205cf ("wifi: ath12k: driver for Qualcomm Wi-Fi 7 devices") Suggested-by: Lukas Wunner lukas@wunner.de Signed-off-by: Ilpo Järvinen ilpo.jarvinen@linux.intel.com Acked-by: Kalle Valo kvalo@kernel.org Cc: stable@vger.kernel.org
drivers/net/wireless/ath/ath12k/pci.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-)
Reviewed-by: Simon Horman simon.horman@corigine.com