[RADEON]: Fix unaligned I/O port access during probe.

The driver does a readl() on DEVICE_ID which is 2-byte aligned and
2-bytes in size.  It's doing this read just to flush write buffers.

Create IN16() and OUT16() macros, and use the former to do this I/O
load.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/video/aty/radeonfb.h b/drivers/video/aty/radeonfb.h
index 659bc9f62244..01b8b2f78514 100644
--- a/drivers/video/aty/radeonfb.h
+++ b/drivers/video/aty/radeonfb.h
@@ -395,6 +395,8 @@ static inline void _radeon_msleep(struct radeonfb_info *rinfo, unsigned long ms)
 
 #define INREG8(addr)            readb((rinfo->mmio_base)+addr)
 #define OUTREG8(addr,val)       writeb(val, (rinfo->mmio_base)+addr)
+#define INREG16(addr)           readw((rinfo->mmio_base)+addr)
+#define OUTREG16(addr,val)      writew(val, (rinfo->mmio_base)+addr)
 #define INREG(addr)             readl((rinfo->mmio_base)+addr)
 #define OUTREG(addr,val)        writel(val, (rinfo->mmio_base)+addr)