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ath5k: don't mask off interrupt bits 

Since interrupts are already masked by the hardware, there's no need to
discard interrupt bits in the ISR itself.  Also, in ath5k_beacon_config
we mask off a couple of bits without locking, so doing this mask in
software can lead to unhandled beacon timer and beacon miss interrupts.

Changes-licensed-under: 3-Clause-BSD

Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Bob Copeland 2009-02-15 12:06:09 -05:00 committed by John W. Linville
parent 144d9ad98e
commit 0b6f582bd3
1 changed files with 0 additions and 7 deletions
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7
drivers/net/wireless/ath5k/base.c
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@ -2408,16 +2408,9 @@ ath5k_intr(int irq, void *dev_id)
return IRQ_NONE;
do {
/*
* Figure out the reason(s) for the interrupt. Note
* that get_isr returns a pseudo-ISR that may include
* bits we haven't explicitly enabled so we mask the
* value to insure we only process bits we requested.
*/
ath5k_hw_get_isr(ah, &status); /* NB: clears IRQ too */
ATH5K_DBG(sc, ATH5K_DEBUG_INTR, "status 0x%x/0x%x\n",
status, sc->imask);
status &= sc->imask; /* discard unasked for bits */
if (unlikely(status & AR5K_INT_FATAL)) {
/*
* Fatal errors are unrecoverable.