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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>
This commit is contained in:
Mark Rustad 2014-03-04 03:02:40 +00:00 committed by Jeff Kirsher
parent dbf8b0d891
commit 984b0ee3e3
1 changed files with 5 additions and 1 deletions
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6
drivers/net/ethernet/intel/ixgbevf/vf.h
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@ -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)