wifi: ath10k: Use RMW accessors for changing LNKCTL

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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 does proper locking to avoid losing
concurrent updates to the register value. On restore, clear the ASPMC field
properly.

Suggested-by: Lukas Wunner <lukas@wunner.de>
Fixes: 76d870ed09 ("ath10k: enable ASPM")
Link: https://lore.kernel.org/r/20230717120503.15276-11-ilpo.jarvinen@linux.intel.com
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Acked-by: Kalle Valo <kvalo@kernel.org>

...

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Ilpo Järvinen 2023-07-17 15:05:02 +03:00 • committed by Bjorn Helgaas

parent f5a7ac118f

commit f139492a09

1 changed files with 5 additions and 4 deletions

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drivers/net/wireless/ath/ath10k/pci.c

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