Hi Felix, I noticed in mt76x2_mac_poll_tx_status() you are reading MT_TX_STAT_FIFO before reading MT_TX_STAT_FIFO_EXT, however I have a hunch that reading MT_TX_STAT_FIFO clobbers the corresponding MT_TX_STAT_FIFO_EXT since MT_TX_STAT_FIFO has the valid bit, and both registers together seem to implement reading a 64bit FIFO entry. I.e. you need to read MT_TX_STAT_FIFO_EXT first otherwise you get a mix from two FIFO entries.
I played a bit with the vendor driver for the mt7610u and confirmed that multiple reads from MT_TX_STAT_FIFO_EXT return the same value until MT_TX_STAT_FIFO is read. (Note the mt7610u vendor driver does not define FIFO_EXT_SUPPORT but the FIFO seems to exist in hardware. The mt7612u vendor driver code reads the MT_TX_STAT_FIFO_EXT first.) Johannes -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
