p54: enhance firmware parser to reduce memory waste

This patch greatly reduces one of biggest memory waste in the driver.

The firmware headers provides the right values for extra head-/tailroom
and mtu size which are usually much lower than the old hardcoded ones.

Signed-off-by: Christian Lamparter <chunkeey@web.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/drivers/net/wireless/p54/p54common.h b/drivers/net/wireless/p54/p54common.h
index a79c1a146917..5f2af5152505 100644
--- a/drivers/net/wireless/p54/p54common.h
+++ b/drivers/net/wireless/p54/p54common.h
@@ -29,6 +29,17 @@ struct bootrec_exp_if {
         __le16 top_compat;
 } __attribute__((packed));
 
+struct bootrec_desc {
+        __le16 modes;
+        __le16 flags;
+        __le32 rx_start;
+        __le32 rx_end;
+        u8 headroom;
+        u8 tailroom;
+        u8 unimportant[6];
+        u8 rates[16];
+} __attribute__((packed));
+
 #define BR_CODE_MIN                     0x80000000
 #define BR_CODE_COMPONENT_ID            0x80000001
 #define BR_CODE_COMPONENT_VERSION       0x80000002