[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>
diff --git a/drivers/char/rio/rio_linux.c b/drivers/char/rio/rio_linux.c
index 8f96b20..aa43436 100644
--- a/drivers/char/rio/rio_linux.c
+++ b/drivers/char/rio/rio_linux.c
@@ -335,7 +335,7 @@
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 99c7447..55b9c97 100644
--- a/drivers/char/rio/rio_linux.h
+++ b/drivers/char/rio/rio_linux.h
@@ -138,12 +138,23 @@
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 @@
#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