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From: Warner Losh <imp@FreeBSD.org>
To: Perforce Change Reviews <perforce@freebsd.org>
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Subject: PERFORCE change 93878 for review
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http://perforce.freebsd.org/chv.cgi?CH=93878

Change 93878 by imp@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);