> In commit 1277fa2ab2f9 ("rtlwifi: Remove the clear interrupt routine from all
> drivers"), the code that cleared all interrupt enable bits before setting them
> was removed for all PCI drivers. This fixed an issue that caused TX to be
> blocked for 3-5 seconds. On some RTL8821AE units, this change causes soft
> lockups to occur on boot. For that reason, the portion of the earlier commit
> that applied to rtl8821ae is reverted. Kernels 4.1 and newer are affected.
>
> See http://marc.info/?l=linux-wireless&m=144373370103285&w=2 and
> https://bugzilla.opensuse.org/show_bug.cgi?id=944978 for two cases where
> this regression affected user systems. Note that this bug does not appear on
> any of the developer's setups. For those users whose systems are affected
> by the TX blockage, but do not lock up on boot, a module parameter is added
> to disable the interrupt clear
>
> Fixes: 1277fa2ab2f9 ("rtlwifi: Remove the clear interrupt routine from all
> drivers")
> Signed-off-by: Larry Finger <[email protected]>
> Cc: Stable <[email protected]> [V4.1+]
Thanks, applied to wireless-drivers.git.
Kalle Valo
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