ixgbe: Check for adapter removal on register writes

Prevent writes to an adapter that has been detected as removed
by a previous failing read. This also fixes some include file
ordering confusion that this patch revealed.

Signed-off-by: Mark Rustad <[email protected]>
Tested-by: Phil Schmitt <[email protected]>
Signed-off-by: Aaron Brown <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

Author: mdrustad

drivers/net/ethernet/intel/ixgbe/ixgbe_common.h

@@ -135,7 +135,11 @@ void ixgbe_check_remove(struct ixgbe_hw *hw, u32 reg);
 
 static inline void ixgbe_write_reg(struct ixgbe_hw *hw, u32 reg, u32 value)
 {
-	writel(value, hw->hw_addr + reg);
+	u8 __iomem *reg_addr = ACCESS_ONCE(hw->hw_addr);
+
+	if (ixgbe_removed(reg_addr))
+		return;
+	writel(value, reg_addr + reg);
 }
 #define IXGBE_WRITE_REG(a, reg, value) ixgbe_write_reg((a), (reg), (value))
 
@@ -150,7 +154,11 @@ static inline void writeq(u64 val, void __iomem *addr)
 
 static inline void ixgbe_write_reg64(struct ixgbe_hw *hw, u32 reg, u64 value)
 {
-	writeq(value, hw->hw_addr + reg);
+	u8 __iomem *reg_addr = ACCESS_ONCE(hw->hw_addr);
+
+	if (ixgbe_removed(reg_addr))
+		return;
+	writeq(value, reg_addr + reg);
 }
 #define IXGBE_WRITE_REG64(a, reg, value) ixgbe_write_reg64((a), (reg), (value))
 

drivers/net/ethernet/intel/ixgbe/ixgbe_mbx.c

@@ -27,8 +27,7 @@
 
 #include <linux/pci.h>
 #include <linux/delay.h>
-#include "ixgbe_type.h"
-#include "ixgbe_common.h"
+#include "ixgbe.h"
 #include "ixgbe_mbx.h"
 
 /**

drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c

@@ -29,7 +29,7 @@
 #include <linux/delay.h>
 #include <linux/sched.h>
 
-#include "ixgbe_common.h"
+#include "ixgbe.h"
 #include "ixgbe_phy.h"
 
 static void ixgbe_i2c_start(struct ixgbe_hw *hw);