From cafb14fecb2085299b1b06beb93d27d46efdfe52 Mon Sep 17 00:00:00 2001 From: Mike Frysinger Date: Wed, 2 Jun 2010 21:03:50 -0400 Subject: [PATCH] AX88180: use standard I/O accessors The current dm9000x driver accesses its memory mapped registers directly instead of using the standard I/O accessors. This can cause problems on Blackfin systems as the accesses can get out of order. So convert the direct volatile dereferences to use the normal in/out macros. Signed-off-by: Mike Frysinger Tested-by: Hoan Hoang Signed-off-by: Ben Warren --- drivers/net/ax88180.h | 15 ++++++++------- 1 file changed, 8 insertions(+), 7 deletions(-) diff --git a/drivers/net/ax88180.h b/drivers/net/ax88180.h index 9a324bdef0..daf18e0157 100644 --- a/drivers/net/ax88180.h +++ b/drivers/net/ax88180.h @@ -19,6 +19,7 @@ #ifndef _AX88180_H_ #define _AX88180_H_ +#include #include #include @@ -354,7 +355,7 @@ struct ax88180_private { static inline unsigned short INW (struct eth_device *dev, unsigned long addr) { - return le16_to_cpu (*(volatile unsigned short *) (addr + dev->iobase)); + return le16_to_cpu(readw(addr + (void *)dev->iobase)); } /* @@ -363,32 +364,32 @@ static inline unsigned short INW (struct eth_device *dev, unsigned long addr) #if defined (CONFIG_DRIVER_AX88180_16BIT) static inline void OUTW (struct eth_device *dev, unsigned short command, unsigned long addr) { - *(volatile unsigned short *) ((addr + dev->iobase)) = cpu_to_le16 (command); + writew(cpu_to_le16(command), addr + (void *)dev->iobase); } static inline unsigned short READ_RXBUF (struct eth_device *dev) { - return le16_to_cpu (*(volatile unsigned short *) (RXBUFFER_START + dev->iobase)); + return le16_to_cpu(readw(RXBUFFER_START + (void *)dev->iobase)); } static inline void WRITE_TXBUF (struct eth_device *dev, unsigned short data) { - *(volatile unsigned short *) ((TXBUFFER_START + dev->iobase)) = cpu_to_le16 (data); + writew(cpu_to_le16(data), TXBUFFER_START + (void *)dev->iobase); } #else static inline void OUTW (struct eth_device *dev, unsigned short command, unsigned long addr) { - *(volatile unsigned long *) ((addr + dev->iobase)) = cpu_to_le32 (command); + writel(cpu_to_le32(command), addr + (void *)dev->iobase); } static inline unsigned long READ_RXBUF (struct eth_device *dev) { - return le32_to_cpu (*(volatile unsigned long *) (RXBUFFER_START + dev->iobase)); + return le32_to_cpu(readl(RXBUFFER_START + (void *)dev->iobase)); } static inline void WRITE_TXBUF (struct eth_device *dev, unsigned long data) { - *(volatile unsigned long *) ((TXBUFFER_START + dev->iobase)) = cpu_to_le32 (data); + writel(cpu_to_le32(data), TXBUFFER_START + (void *)dev->iobase); } #endif -- 2.25.1