From d55398ba81139bc826a8c2417a01280e99f08cf3 Mon Sep 17 00:00:00 2001 From: Claudiu Manoil Date: Tue, 7 Oct 2014 10:44:35 +0300 Subject: gianfar: Replace eieio with wmb for non-PPC archs Replace PPC specific eieio() with arch independent wmb() for other architectures, i.e. ARM. The eieio() macro is not defined on ARM and generates build error. Signed-off-by: Claudiu Manoil Signed-off-by: David S. Miller --- drivers/net/ethernet/freescale/gianfar.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'drivers/net/ethernet/freescale/gianfar.h') diff --git a/drivers/net/ethernet/freescale/gianfar.h b/drivers/net/ethernet/freescale/gianfar.h index 0b3772217a9a..2805cfbf1765 100644 --- a/drivers/net/ethernet/freescale/gianfar.h +++ b/drivers/net/ethernet/freescale/gianfar.h @@ -1241,6 +1241,22 @@ static inline int gfar_is_rx_dma_stopped(struct gfar_private *priv) return gfar_read(®s->ievent) & IEVENT_GRSC; } +static inline void gfar_wmb(void) +{ +#if defined(CONFIG_PPC) + /* The powerpc-specific eieio() is used, as wmb() has too strong + * semantics (it requires synchronization between cacheable and + * uncacheable mappings, which eieio() doesn't provide and which we + * don't need), thus requiring a more expensive sync instruction. At + * some point, the set of architecture-independent barrier functions + * should be expanded to include weaker barriers. + */ + eieio(); +#else + wmb(); /* order write acesses for BD (or FCB) fields */ +#endif +} + irqreturn_t gfar_receive(int irq, void *dev_id); int startup_gfar(struct net_device *dev); void stop_gfar(struct net_device *dev); -- cgit v1.2.3-59-g8ed1b