PERFORCE change 93878 for review
Warner Losh
imp at FreeBSD.org
Thu Mar 23 21:49:58 UTC 2006
http://perforce.freebsd.org/chv.cgi?CH=93878
Change 93878 by imp at imp_Speedy on 2006/03/23 21:48:55
spin locks for fast interrupts
Affected files ...
.. //depot/projects/arm/src/sys/arm/at91/at91_pio.c#8 edit
Differences ...
==== //depot/projects/arm/src/sys/arm/at91/at91_pio.c#8 (text+ko) ====
@@ -64,11 +64,11 @@
bus_write_4(sc->mem_res, off, val);
}
-#define AT91_PIO_LOCK(_sc) mtx_lock(&(_sc)->sc_mtx)
-#define AT91_PIO_UNLOCK(_sc) mtx_unlock(&(_sc)->sc_mtx)
+#define AT91_PIO_LOCK(_sc) mtx_lock_spin(&(_sc)->sc_mtx)
+#define AT91_PIO_UNLOCK(_sc) mtx_unlock_spin(&(_sc)->sc_mtx)
#define AT91_PIO_LOCK_INIT(_sc) \
mtx_init(&_sc->sc_mtx, device_get_nameunit(_sc->dev), \
- "pio", MTX_DEF)
+ "pio", MTX_SPIN)
#define AT91_PIO_LOCK_DESTROY(_sc) mtx_destroy(&_sc->sc_mtx);
#define AT91_PIO_ASSERT_LOCKED(_sc) mtx_assert(&_sc->sc_mtx, MA_OWNED);
#define AT91_PIO_ASSERT_UNLOCKED(_sc) mtx_assert(&_sc->sc_mtx, MA_NOTOWNED);
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