sh: generic_in/outs{bwl} optimizations.

After performing the port2addr conversion, and checking that the data is
correctly aligned, simply call __raw_readsX/writesX. These have already been
optimised.

Signed-off-by: Stuart Menefy <stuart.menefy@st.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 8 insertions, 42 deletions

diff --git a/arch/sh/kernel/io_generic.c b/arch/sh/kernel/io_generic.c
index 5a7f554d9ca1..4ff507239286 100644
--- a/arch/sh/kernel/io_generic.c
+++ b/arch/sh/kernel/io_generic.c
@@ -73,35 +73,19 @@ u32 generic_inl_p(unsigned long port)
 
 void generic_insb(unsigned long port, void *dst, unsigned long count)
 {
-        volatile u8 *port_addr;
-        u8 *buf = dst;
-
-        port_addr = (volatile u8 __force *)__ioport_map(port, 1);
-        while (count--)
-                *buf++ = *port_addr;
+        __raw_readsb(__ioport_map(port, 1), dst, count);
+        dummy_read();
 }
 
 void generic_insw(unsigned long port, void *dst, unsigned long count)
 {
-        volatile u16 *port_addr;
-        u16 *buf = dst;
-
-        port_addr = (volatile u16 __force *)__ioport_map(port, 2);
-        while (count--)
-                *buf++ = *port_addr;
-
+        __raw_readsw(__ioport_map(port, 2), dst, count);
         dummy_read();
 }
 
 void generic_insl(unsigned long port, void *dst, unsigned long count)
 {
-        volatile u32 *port_addr;
-        u32 *buf = dst;
-
-        port_addr = (volatile u32 __force *)__ioport_map(port, 4);
-        while (count--)
-                *buf++ = *port_addr;
-
+        __raw_readsl(__ioport_map(port, 4), dst, count);
         dummy_read();
 }
 
@@ -145,37 +129,19 @@ void generic_outl_p(u32 b, unsigned long port)
  */
 void generic_outsb(unsigned long port, const void *src, unsigned long count)
 {
-        volatile u8 *port_addr;
-        const u8 *buf = src;
-
-        port_addr = (volatile u8 __force *)__ioport_map(port, 1);
-
-        while (count--)
-                *port_addr = *buf++;
+        __raw_writesb(__ioport_map(port, 1), src, count);
+        dummy_read();
 }
 
 void generic_outsw(unsigned long port, const void *src, unsigned long count)
 {
-        volatile u16 *port_addr;
-        const u16 *buf = src;
-
-        port_addr = (volatile u16 __force *)__ioport_map(port, 2);
-
-        while (count--)
-                *port_addr = *buf++;
-
+        __raw_writesw(__ioport_map(port, 2), src, count);
         dummy_read();
 }
 
 void generic_outsl(unsigned long port, const void *src, unsigned long count)
 {
-        volatile u32 *port_addr;
-        const u32 *buf = src;
-
-        port_addr = (volatile u32 __force *)__ioport_map(port, 4);
-        while (count--)
-                *port_addr = *buf++;
-
+        __raw_writesl(__ioport_map(port, 4), src, count);
         dummy_read();
 }