b43: flush PHY writes when needed

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/net/wireless/b43/phy_common.h b/drivers/net/wireless/b43/phy_common.h
index 0e6194228845..2ed60e5484b6 100644
--- a/drivers/net/wireless/b43/phy_common.h
+++ b/drivers/net/wireless/b43/phy_common.h
@@ -39,6 +39,9 @@ struct b43_c32 { s32 i, q; };
 #define B43_PHYVER_TYPE_SHIFT           8
 #define B43_PHYVER_VERSION              0x00FF
 
+/* PHY writes need to be flushed if we reach limit */
+#define B43_MAX_WRITES_IN_ROW           24
+
 /**
  * enum b43_interference_mitigation - Interference Mitigation mode
  *
@@ -232,6 +235,9 @@ struct b43_phy {
         /* PHY revision number. */
         u8 rev;
 
+        /* Count writes since last read */
+        u8 writes_counter;
+
         /* Radio versioning */
         u16 radio_manuf;        /* Radio manufacturer */
         u16 radio_ver;          /* Radio version */