[PATCH] epic100: Test __BIG_ENDIAN instead of (non-existent) CONFIG_BIG_ENDIAN

[PATCH] epic100: Test __BIG_ENDIAN instead of (non-existent) CONFIG_BIG_ENDIAN

[Roland Dreier]

Probably no one has used this driver on big-endian systems, since it was
setting up descriptor swapping if CONFIG_BIG_ENDIAN is set, which it
never is, since that symbol is not mentioned anywhere else in the kernel
source.  Switch this test to a check for __BIG_ENDIAN so it has a chance
at working.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
---
 drivers/net/epic100.c |    7 ++++---
 1 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/net/epic100.c b/drivers/net/epic100.c
index 6838dfc..4c27465 100644
--- a/drivers/net/epic100.c
+++ b/drivers/net/epic100.c
@@ -87,6 +87,7 @@ static int rx_copybreak;
 #include <linux/bitops.h>
 #include <asm/io.h>
 #include <asm/uaccess.h>
+#include <asm/byteorder.h>
 
 /* These identify the driver base version and may not be removed. */
 static char version[] __devinitdata =
@@ -230,7 +231,7 @@ static const u16 media2miictl[16] = {
  * The EPIC100 Rx and Tx buffer descriptors.  Note that these
  * really ARE host-endian; it's not a misannotation.  We tell
  * the card to byteswap them internally on big-endian hosts -
- * look for #ifdef CONFIG_BIG_ENDIAN in epic_open().
+ * look for #ifdef __BIG_ENDIAN in epic_open().
  */
 
 struct epic_tx_desc {
@@ -690,7 +691,7 @@ static int epic_open(struct net_device *dev)
 		outl((inl(ioaddr + NVCTL) & ~0x003C) | 0x4800, ioaddr + NVCTL);
 
 	/* Tell the chip to byteswap descriptors on big-endian hosts */
-#ifdef CONFIG_BIG_ENDIAN
+#ifdef __BIG_ENDIAN
 	outl(0x4432 | (RX_FIFO_THRESH<<8), ioaddr + GENCTL);
 	inl(ioaddr + GENCTL);
 	outl(0x0432 | (RX_FIFO_THRESH<<8), ioaddr + GENCTL);
@@ -806,7 +807,7 @@ static void epic_restart(struct net_device *dev)
 	for (i = 16; i > 0; i--)
 		outl(0x0008, ioaddr + TEST1);
 
-#ifdef CONFIG_BIG_ENDIAN
+#ifdef __BIG_ENDIAN
 	outl(0x0432 | (RX_FIFO_THRESH<<8), ioaddr + GENCTL);
 #else
 	outl(0x0412 | (RX_FIFO_THRESH<<8), ioaddr + GENCTL);

-- 
Roland Dreier <rolandd@cisco.com> || For corporate legal information go to:
http://www.cisco.com/web/about/doing_business/legal/cri/index.html

Re: [PATCH] epic100: Test __BIG_ENDIAN instead of (non-existent) CONFIG_BIG_ENDIAN

[Jeff Garzik]

On 06/02/2010 04:36 PM, Roland Dreier wrote:
> Probably no one has used this driver on big-endian systems, since it was
> setting up descriptor swapping if CONFIG_BIG_ENDIAN is set, which it
> never is, since that symbol is not mentioned anywhere else in the kernel
> source.  Switch this test to a check for __BIG_ENDIAN so it has a chance
> at working.
>
> Signed-off-by: Roland Dreier<rolandd@cisco.com>

Acked-by: Jeff Garzik <jgarzik@redhat.com>

Re: [PATCH] epic100: Test __BIG_ENDIAN instead of (non-existent) CONFIG_BIG_ENDIAN

[David Miller]

From: Jeff Garzik <jeff@garzik.org>
Date: Wed, 02 Jun 2010 20:08:27 -0400

> On 06/02/2010 04:36 PM, Roland Dreier wrote:
>> Probably no one has used this driver on big-endian systems, since it
>> was
>> setting up descriptor swapping if CONFIG_BIG_ENDIAN is set, which it
>> never is, since that symbol is not mentioned anywhere else in the
>> kernel
>> source.  Switch this test to a check for __BIG_ENDIAN so it has a
>> chance
>> at working.
>>
>> Signed-off-by: Roland Dreier<rolandd@cisco.com>
> 
> Acked-by: Jeff Garzik <jgarzik@redhat.com>

Applied.