From 017fb98e70351e9fb5635c299c4d1c50e2f8b823 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Thu, 29 Sep 2005 19:26:51 -0700 Subject: [PATCH] [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 --- drivers/video/aty/radeon_base.c | 2 +- drivers/video/aty/radeonfb.h | 2 ++ 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/video/aty/radeon_base.c b/drivers/video/aty/radeon_base.c index 046b4786026..8a24a66d9ba 100644 --- a/drivers/video/aty/radeon_base.c +++ b/drivers/video/aty/radeon_base.c @@ -475,7 +475,7 @@ static int __devinit radeon_probe_pll_params(struct radeonfb_info *rinfo) */ /* Flush PCI buffers ? */ - tmp = INREG(DEVICE_ID); + tmp = INREG16(DEVICE_ID); local_irq_disable(); diff --git a/drivers/video/aty/radeonfb.h b/drivers/video/aty/radeonfb.h index 659bc9f6224..01b8b2f7851 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) -- 2.41.1