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authorDavid S. Miller <davem@sunset.davemloft.net>2005-09-29 19:26:51 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2005-09-29 19:26:51 -0700
commit017fb98e70351e9fb5635c299c4d1c50e2f8b823 (patch)
tree9ccad087ad69f2cbc080f4ddefb3c110d5b7aafc /drivers/video
parent717463d806a53380a691eeb0136a4b750a9f9ae0 (diff)
downloadop-kernel-dev-017fb98e70351e9fb5635c299c4d1c50e2f8b823.zip
op-kernel-dev-017fb98e70351e9fb5635c299c4d1c50e2f8b823.tar.gz
[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>
Diffstat (limited to 'drivers/video')
-rw-r--r--drivers/video/aty/radeon_base.c2
-rw-r--r--drivers/video/aty/radeonfb.h2
2 files changed, 3 insertions, 1 deletions
diff --git a/drivers/video/aty/radeon_base.c b/drivers/video/aty/radeon_base.c
index 046b478..8a24a66 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 659bc9f..01b8b2f 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)
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