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Re: [PATCH 6.6 1/1] wifi: iwlwifi: pcie: fix RB status reading

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On Thu, Mar 28, 2024 at 09:54:02AM +0800, Aaron Ma wrote:
> From: Johannes Berg <johannes.berg@xxxxxxxxx>
> 
> [ Upstream commit 9f9797c7de18d2ec6be4ef6e0abbaea585040b39 ]
> 
> On newer hardware, a queue's RB status / write pointer
> can be bigger than 4095 (0xFFF), so we cannot mask the
> value by 0xFFF unconditionally. Since anyway that's
> only necessary on older hardware, move the masking to
> the helper function and apply it only for older HW.
> This also moves the endian conversion in to handle it
> more easily.
> 
> Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
> Signed-off-by: Gregory Greenman <gregory.greenman@xxxxxxxxx>
> Link: https://lore.kernel.org/r/20230830112059.7be2a3fff6f4.I94f11dee314a4f7c1941d2d223936b1fa8aa9ee4@changeid
> Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
> Cc: stable@xxxxxxxxxxxxxxx # 6.6.y
> Signed-off-by: Aaron Ma <aaron.ma@xxxxxxxxxxxxx>
> ---
>  drivers/net/wireless/intel/iwlwifi/pcie/internal.h |  8 ++++----
>  drivers/net/wireless/intel/iwlwifi/pcie/rx.c       |  2 +-
>  drivers/net/wireless/intel/iwlwifi/pcie/trans.c    | 12 ++++--------
>  3 files changed, 9 insertions(+), 13 deletions(-)

Now queued up, thanks.

greg k-h




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