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| author | Al Viro <viro@zeniv.linux.org.uk> | 2006-05-27 01:48:08 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2006-05-27 02:26:49 -0400 |
| commit | ae5b28a5bb1b5f5d53085a044aec69db41fd0336 (patch) | |
| tree | 8b618a3ef0efc0c49de551c4c13fd146b38fa746 | |
| parent | bfa6b7bb35a9c8c8acae3056f2cb3364c52693d4 (diff) | |
| download | linux-stable-ae5b28a5bb1b5f5d53085a044aec69db41fd0336.tar.gz linux-stable-ae5b28a5bb1b5f5d53085a044aec69db41fd0336.tar.bz2 linux-stable-ae5b28a5bb1b5f5d53085a044aec69db41fd0336.zip | |
[PATCH] fix rio_copy_to_card() for OLDPCI case
It replaced old rio_pcicopy(). That puppy did _not_ do readb() (unlike
rio_memcpy_toio()) and current implementation is simply broken - readb(NULL)
is never a valid thing to do.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| -rw-r--r-- | drivers/char/rio/rio_linux.c | 2 | ||||
| -rw-r--r-- | drivers/char/rio/rio_linux.h | 14 |
2 files changed, 14 insertions, 2 deletions
diff --git a/drivers/char/rio/rio_linux.c b/drivers/char/rio/rio_linux.c index 8f96b20090e8..aa43436d5d1b 100644 --- a/drivers/char/rio/rio_linux.c +++ b/drivers/char/rio/rio_linux.c @@ -335,7 +335,7 @@ int RIODelay_ni(struct Port *PortP, int njiffies) void rio_copy_to_card(void *from, void __iomem *to, int len) { - rio_memcpy_toio(NULL, to, from, len); + rio_copy_toio(to, from, len); } int rio_minor(struct tty_struct *tty) diff --git a/drivers/char/rio/rio_linux.h b/drivers/char/rio/rio_linux.h index 99c7447b6113..55b9c97e8477 100644 --- a/drivers/char/rio/rio_linux.h +++ b/drivers/char/rio/rio_linux.h @@ -138,12 +138,23 @@ static inline void __iomem *rio_memcpy_toio(void __iomem *dummy, void __iomem *d while (n--) { writeb(*src++, dst++); - (void) readb(dummy); /* WTF? */ + (void) readb(dummy); } return dest; } +static inline void __iomem *rio_copy_toio(void __iomem *dest, void *source, int n) +{ + char __iomem *dst = dest; + char *src = source; + + while (n--) + writeb(*src++, dst++); + + return dest; +} + static inline void *rio_memcpy_fromio(void *dest, void __iomem *source, int n) { @@ -158,6 +169,7 @@ static inline void *rio_memcpy_fromio(void *dest, void __iomem *source, int n) #else #define rio_memcpy_toio(dummy,dest,source,n) memcpy_toio(dest, source, n) +#define rio_copy_toio memcpy_toio #define rio_memcpy_fromio memcpy_fromio #endif |