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authorAl Viro <viro@zeniv.linux.org.uk>2006-05-27 09:48:08 +0400
committerAl Viro <viro@zeniv.linux.org.uk>2006-05-27 10:26:49 +0400
commitae5b28a5bb1b5f5d53085a044aec69db41fd0336 (patch)
tree8b618a3ef0efc0c49de551c4c13fd146b38fa746 /drivers/char/rio
parentbfa6b7bb35a9c8c8acae3056f2cb3364c52693d4 (diff)
downloadlinux-ae5b28a5bb1b5f5d53085a044aec69db41fd0336.tar.xz
[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>
Diffstat (limited to 'drivers/char/rio')
-rw-r--r--drivers/char/rio/rio_linux.c2
-rw-r--r--drivers/char/rio/rio_linux.h14
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