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wpi(4): fix possible race between TX/RX threads.

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Tested:

* Tested with Intel 3945BG, STA mode

Submitted by:	<s3erios@gmail.com>
Differential Revision:	https://reviews.freebsd.org/D3766
This commit is contained in:
Adrian Chadd 2015-10-11 01:56:46 +00:00
parent 19053a5448
commit 431ebc90bf
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=289127
1 changed files with 2 additions and 0 deletions
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2
sys/dev/wpi/if_wpi.c
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@ -1093,6 +1093,7 @@ wpi_update_rx_ring_ps(struct wpi_softc *sc)
return;
}
WPI_TXQ_LOCK(sc);
WPI_SETBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ);
if (WPI_READ(sc, WPI_GP_CNTRL) & WPI_GP_CNTRL_SLEEP) {
DPRINTF(sc, WPI_DEBUG_PWRSAVE, "%s: wakeup request\n",
@ -1102,6 +1103,7 @@ wpi_update_rx_ring_ps(struct wpi_softc *sc)
wpi_update_rx_ring(sc);
WPI_CLRBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ);
}
WPI_TXQ_UNLOCK(sc);
}
static void