Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=bb44fb70e069412c08e07f494b6b4e985f6331ac
Commit: bb44fb70e069412c08e07f494b6b4e985f6331ac
Parent: 073d3f46e5ccc49ede1d3487ed1e71d63d71b750
Author: Ben Dooks <[EMAIL PROTECTED]>
AuthorDate: Tue Feb 5 00:02:20 2008 +0000
Committer: Jeff Garzik <[EMAIL PROTECTED]>
CommitDate: Mon Feb 11 11:06:35 2008 -0500
DM9000: Add platform flag for no attached EEPROM
Allow the platform data to specify to the DM9000 driver
that there is no posibility of an attached EEPROM on the
device, so default all reads to 0xff and ignore any
write operations.
Signed-off-by: Ben Dooks <[EMAIL PROTECTED]>
Signed-off-by: Jeff Garzik <[EMAIL PROTECTED]>
---
drivers/net/dm9000.c | 15 +++++++++++++++
include/linux/dm9000.h | 1 +
2 files changed, 16 insertions(+), 0 deletions(-)
diff --git a/drivers/net/dm9000.c b/drivers/net/dm9000.c
index d0cd7f9..afd2cf5 100644
--- a/drivers/net/dm9000.c
+++ b/drivers/net/dm9000.c
@@ -405,6 +405,9 @@ static int dm9000_get_eeprom(struct net_device *dev,
if ((len & 1) != 0 || (offset & 1) != 0)
return -EINVAL;
+ if (dm->flags & DM9000_PLATF_NO_EEPROM)
+ return -ENOENT;
+
ee->magic = DM_EEPROM_MAGIC;
for (i = 0; i < len; i += 2)
@@ -426,6 +429,9 @@ static int dm9000_set_eeprom(struct net_device *dev,
if ((len & 1) != 0 || (offset & 1) != 0)
return -EINVAL;
+ if (dm->flags & DM9000_PLATF_NO_EEPROM)
+ return -ENOENT;
+
if (ee->magic != DM_EEPROM_MAGIC)
return -EINVAL;
@@ -1100,6 +1106,12 @@ dm9000_read_eeprom(board_info_t *db, int offset, u8 *to)
{
unsigned long flags;
+ if (db->flags & DM9000_PLATF_NO_EEPROM) {
+ to[0] = 0xff;
+ to[1] = 0xff;
+ return;
+ }
+
mutex_lock(&db->addr_lock);
spin_lock_irqsave(&db->lock, flags);
@@ -1134,6 +1146,9 @@ dm9000_write_eeprom(board_info_t *db, int offset, u8
*data)
{
unsigned long flags;
+ if (db->flags & DM9000_PLATF_NO_EEPROM)
+ return;
+
mutex_lock(&db->addr_lock);
spin_lock_irqsave(&db->lock, flags);
diff --git a/include/linux/dm9000.h b/include/linux/dm9000.h
index ea530fd..a375046 100644
--- a/include/linux/dm9000.h
+++ b/include/linux/dm9000.h
@@ -20,6 +20,7 @@
#define DM9000_PLATF_16BITONLY (0x0002)
#define DM9000_PLATF_32BITONLY (0x0004)
#define DM9000_PLATF_EXT_PHY (0x0008)
+#define DM9000_PLATF_NO_EEPROM (0x0010)
/* platfrom data for platfrom device structure's platfrom_data field */
-
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