[PATCH] zd1211rw: Remove addressing abstraction

Instead of passing our own custom 32-bit addresses around and
translating them, this patch makes all our register address constants
absolute and removes the translation.

There are two ugly parts:
 - fw_reg_addr() is needed to compute addresses of firmware registers, as this
   is dynamic based upon firmware
 - inc_addr() needs a small hack to handle byte vs word addressing

However, both of those are only small, and we don't use fw_regs a whole
lot anyway.

The bonuses here include simplicity and improved driver readability. Also, the
fact that registers are now referenced by 16-bit absolute addresses (as
opposed to 32-bit pseudo addresses) means that over 2kb compiled code size has
been shaved off.

Includes some touchups and sparse fixes from Ulrich Kunitz.

Signed-off-by: Daniel Drake <dsd@gentoo.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 2 insertions, 4 deletions

diff --git a/drivers/net/wireless/zd1211rw/zd_usb.h b/drivers/net/wireless/zd1211rw/zd_usb.h
index 317d37c3667..506ea6a7439 100644
--- a/drivers/net/wireless/zd1211rw/zd_usb.h
+++ b/drivers/net/wireless/zd1211rw/zd_usb.h
@@ -25,7 +25,6 @@
 #include <linux/usb.h>
 
 #include "zd_def.h"
-#include "zd_types.h"
 
 enum devicetype {
 	DEVICE_ZD1211  = 0,
@@ -181,15 +180,14 @@ struct zd_usb_tx {
 	spinlock_t lock;
 };
 
-/* Contains the usb parts. The structure doesn't require a lock, because intf
- * and fw_base_offset, will not be changed after initialization.
+/* Contains the usb parts. The structure doesn't require a lock because intf
+ * will not be changed after initialization.
  */
 struct zd_usb {
 	struct zd_usb_interrupt intr;
 	struct zd_usb_rx rx;
 	struct zd_usb_tx tx;
 	struct usb_interface *intf;
-	u16 fw_base_offset;
 };
 
 #define zd_usb_dev(usb) (&usb->intf->dev)