Author: bschmidt
Date: Fri Apr 15 16:50:37 2011
New Revision: 220659
URL: http://svn.freebsd.org/changeset/base/220659
Log:
Don't timeout when stopping DMA channels.
Obtained from: OpenBSD
Modified:
head/sys/dev/iwn/if_iwn.c
head/sys/dev/iwn/if_iwnreg.h
Modified: head/sys/dev/iwn/if_iwn.c
==============================================================================
--- head/sys/dev/iwn/if_iwn.c Fri Apr 15 16:44:04 2011 (r220658)
+++ head/sys/dev/iwn/if_iwn.c Fri Apr 15 16:50:37 2011 (r220659)
@@ -4003,7 +4003,7 @@ iwn4965_get_temperature(struct iwn_softc
return 0;
/* Sign-extend 23-bit R4 value to 32-bit. */
- r4 = (r4 << 8) >> 8;
+ r4 = ((r4 & 0xffffff) ^ 0x800000) - 0x800000;
/* Compute temperature in Kelvin. */
temp = (259 * (r4 - r2)) / (r3 - r1);
temp = (temp * 97) / 100 + 8;
@@ -6283,7 +6283,6 @@ static void
iwn_hw_stop(struct iwn_softc *sc)
{
const struct iwn_hal *hal = sc->sc_hal;
- uint32_t tmp;
int chnl, qid, ntries;
IWN_WRITE(sc, IWN_RESET, IWN_RESET_NEVO);
@@ -6305,8 +6304,7 @@ iwn_hw_stop(struct iwn_softc *sc)
for (chnl = 0; chnl < hal->ndmachnls; chnl++) {
IWN_WRITE(sc, IWN_FH_TX_CONFIG(chnl), 0);
for (ntries = 0; ntries < 200; ntries++) {
- tmp = IWN_READ(sc, IWN_FH_TX_STATUS);
- if ((tmp & IWN_FH_TX_STATUS_IDLE(chnl)) ==
+ if (IWN_READ(sc, IWN_FH_TX_STATUS) &
IWN_FH_TX_STATUS_IDLE(chnl))
break;
DELAY(10);
Modified: head/sys/dev/iwn/if_iwnreg.h
==============================================================================
--- head/sys/dev/iwn/if_iwnreg.h Fri Apr 15 16:44:04 2011
(r220658)
+++ head/sys/dev/iwn/if_iwnreg.h Fri Apr 15 16:50:37 2011
(r220659)
@@ -283,8 +283,7 @@
#define IWN_FH_TX_CHICKEN_SCHED_RETRY (1 << 1)
/* Possible flags for register IWN_FH_TX_STATUS. */
-#define IWN_FH_TX_STATUS_IDLE(chnl) \
- (1 << ((chnl) + 24) | 1 << ((chnl) + 16))
+#define IWN_FH_TX_STATUS_IDLE(chnl) (1 << ((chnl) + 16))
/* Possible flags for register IWN_FH_RX_CONFIG. */
#define IWN_FH_RX_CONFIG_ENA (1 << 31)
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