Hello Felix Fietkau,
The patch d31a36a6d87f: "ath9k: reduce baseband hang detection false
positive rate" from Feb 24, 2014, leads to the following static
checker warning:
drivers/net/wireless/ath/ath9k/hw.c:1563 ath9k_hw_check_alive()
info: ignoring unreachable code.
drivers/net/wireless/ath/ath9k/hw.c
1545 do {
1546 reg = REG_READ(ah, AR_OBS_BUS_1);
1547 if (reg != last_val)
1548 return true;
1549
1550 last_val = reg;
1551 if ((reg & 0x7E7FFFEF) == 0x00702400)
1552 continue;
1553
1554 switch (reg & 0x7E000B00) {
1555 case 0x1E000000:
1556 case 0x52000B00:
1557 case 0x18000B00:
1558 continue;
1559 default:
1560 return true;
1561 }
1562
1563 udelay(1);
^^^^^^^^^
We never hit this recently added delay.
1564 } while (count-- > 0);
regards,
dan carpenter
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