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ath9k: remove ah->mask_reg, it's never used properly

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ah->mask_reg was used to hold different data throughout the driver.
ath9k_hw_init_interrupt_masks() used it to save the value written to
AR_IMR.  ath9k_hw_set_interrupts() used it to hold the interrupt mask as
defined in enum ath9k_int.  Those masks differ in many bits.

Use ah->imask instead of ah->mask_reg in ath9k_hw_set_interrupts() and
ath9k_hw_updatetxtriglevel().  That's what the code was meant to do.
ah->imask is initialized in ath9k_start(), so we don't need to
initialize it from ah->mask_reg.

Once it's done, ah->mask_reg becomes write-only, so it's replaced with a
local variable in ath9k_hw_init_interrupt_masks().

Signed-off-by: Pavel Roskin <proski@gnu.org>
Reported-by: Julia Lawall <julia@diku.dk>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Pavel Roskin 2010-03-31 18:05:37 -04:00 committed by John W. Linville
parent 3069168c82
commit 152d530d9e
3 changed files with 8 additions and 10 deletions
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15
drivers/net/wireless/ath/ath9k/hw.c
View File

@ -1120,23 +1120,23 @@ static void ath9k_hw_init_chain_masks(struct ath_hw *ah)
static void ath9k_hw_init_interrupt_masks(struct ath_hw *ah,
enum nl80211_iftype opmode)
{
ah->mask_reg = AR_IMR_TXERR |
u32 imr_reg = AR_IMR_TXERR |
AR_IMR_TXURN |
AR_IMR_RXERR |
AR_IMR_RXORN |
AR_IMR_BCNMISC;
if (ah->config.rx_intr_mitigation)
ah->mask_reg |= AR_IMR_RXINTM | AR_IMR_RXMINTR;
imr_reg |= AR_IMR_RXINTM | AR_IMR_RXMINTR;
else
ah->mask_reg |= AR_IMR_RXOK;
imr_reg |= AR_IMR_RXOK;
ah->mask_reg |= AR_IMR_TXOK;
imr_reg |= AR_IMR_TXOK;
if (opmode == NL80211_IFTYPE_AP)
ah->mask_reg |= AR_IMR_MIB;
imr_reg |= AR_IMR_MIB;
REG_WRITE(ah, AR_IMR, ah->mask_reg);
REG_WRITE(ah, AR_IMR, imr_reg);
ah->imrs2_reg |= AR_IMR_S2_GTT;
REG_WRITE(ah, AR_IMR_S2, ah->imrs2_reg);
@ -2839,7 +2839,7 @@ EXPORT_SYMBOL(ath9k_hw_getisr);
enum ath9k_int ath9k_hw_set_interrupts(struct ath_hw *ah, enum ath9k_int ints)
{
u32 omask = ah->mask_reg;
enum ath9k_int omask = ah->imask;
u32 mask, mask2;
struct ath9k_hw_capabilities *pCap = &ah->caps;
struct ath_common *common = ath9k_hw_common(ah);
@ -2911,7 +2911,6 @@ enum ath9k_int ath9k_hw_set_interrupts(struct ath_hw *ah, enum ath9k_int ints)
AR_IMR_S2_TSFOOR | AR_IMR_S2_GTT | AR_IMR_S2_CST);
ah->imrs2_reg |= mask2;
REG_WRITE(ah, AR_IMR_S2, ah->imrs2_reg);
ah->mask_reg = ints;
if (!(pCap->hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) {
if (ints & ATH9K_INT_TIM_TIMER)

1
drivers/net/wireless/ath/ath9k/hw.h
View File

@ -479,7 +479,6 @@ struct ath_hw {
int16_t curchan_rad_index;
enum ath9k_int imask;
u32 mask_reg;
u32 imrs2_reg;
u32 txok_interrupt_mask;
u32 txerr_interrupt_mask;

2
drivers/net/wireless/ath/ath9k/mac.c
View File

@ -105,7 +105,7 @@ bool ath9k_hw_updatetxtriglevel(struct ath_hw *ah, bool bIncTrigLevel)
if (ah->tx_trig_level >= ah->config.max_txtrig_level)
return false;
omask = ath9k_hw_set_interrupts(ah, ah->mask_reg & ~ATH9K_INT_GLOBAL);
omask = ath9k_hw_set_interrupts(ah, ah->imask & ~ATH9K_INT_GLOBAL);
txcfg = REG_READ(ah, AR_TXCFG);
curLevel = MS(txcfg, AR_FTRIG);