Commit 984b0ee3 authored Mar 04, 2014 by Mark Rustad Committed by Jeff Kirsher Mar 21, 2014

ixgbevf: Check for adapter removal on register writes



Prevent writes to an adapter that has been detected as removed
by a previous failing read.

Signed-off-by: Mark Rustad <mark.d.rustad@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

parent dbf8b0d8

drivers/net/ethernet/intel/ixgbevf/vf.h

+5 −1

Original line number	Diff line number	Diff line
		@@ -178,7 +178,11 @@ struct ixgbevf_info {

		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(h, r, v) ixgbe_write_reg(h, r, v)