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[V3,07/13] ixgbe: Clear I2C destination location

Message ID 20150731002015.112031.4435.stgit@mdrustad-wks.jf.intel.com
State Superseded
Delegated to: Jeff Kirsher
Headers show

Commit Message

Rustad, Mark D July 31, 2015, 12:20 a.m. UTC 
Clear the destination location for I2C data initially so that
the received data will not be affected by previous attempts.
This could have returned wrong data in certain retry sequences.

Signed-off-by: Mark Rustad <mark.d.rustad@intel.com>
---
 drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c |    1 +
 1 file changed, 1 insertion(+)
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Patch

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c
index d334011f09d1..174e75b6b6d4 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c
@@ -2014,6 +2014,7 @@  static s32 ixgbe_clock_in_i2c_byte(struct ixgbe_hw *hw, u8 *data)
 	s32 i;
 	bool bit = false;
 
+	*data = 0;
 	for (i = 7; i >= 0; i--) {
 		ixgbe_clock_in_i2c_bit(hw, &bit);
 		*data |= bit << i;