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Devin WittmayerandFelix Fietkau
8e856ad93d
mt7921e_mac_reset() ignores the return value of mt792xe_mcu_drv_pmctrl(). When the driver-own handshake fails, __mt792xe_mcu_drv_pmctrl() returns -EIO without reinitialising WPDMA or clearing MT76_STATE_PM, and the reset carries on: it writes the interrupt enable registers, cycles NAPI, resets WPDMA and downloads firmware to a chip the driver does not own. Return the error instead. The call is the first statement in the function, before any teardown, so nothing needs unwinding. Reported-by: moosager <[email protected]> Link: https://lore.kernel.org/linux-wireless/[email protected]/ Fixes: dfc7743de1eb ("mt76: mt7921: refactor mcu.c to be bus independent") Signed-off-by: Devin Wittmayer <[email protected]> Tested-by: moosager <[email protected]> Link: https://patch.msgid.link/[email protected] Signed-off-by: Felix Fietkau <[email protected]>