diff options
| -rw-r--r-- | drivers/net/b44.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/net/b44.c b/drivers/net/b44.c index 1ec217433b4c..474a4e3438db 100644 --- a/drivers/net/b44.c +++ b/drivers/net/b44.c @@ -908,8 +908,9 @@ static irqreturn_t b44_interrupt(int irq, void *dev_id) istat = br32(bp, B44_ISTAT); imask = br32(bp, B44_IMASK); - /* ??? What the fuck is the purpose of the interrupt mask - * ??? register if we have to mask it out by hand anyways? + /* The interrupt mask register controls which interrupt bits + * will actually raise an interrupt to the CPU when set by hw/firmware, + * but doesn't mask off the bits. */ istat &= imask; if (istat) { |