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yaml --- r: 266446 b: refs/heads/master c: 76d0652 h: refs/heads/master v: v3
git-mirror · Oct 6, 2011 · 705b28e · 705b28e
1 parent 0fdd32e
commit 705b28e
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Showing 2 changed files with 7 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 6b8456c0199c4dd35bb7a04ff299ab925699e390
+refs/heads/master: 76d06521f514e4e7e6bfb848ef0e3f8eb421f46d
diff --git a/trunk/drivers/net/ethernet/intel/igb/e1000_phy.c b/trunk/drivers/net/ethernet/intel/igb/e1000_phy.c
@@ -306,6 +306,12 @@ s32 igb_write_phy_reg_i2c(struct e1000_hw *hw, u32 offset, u16 data)
 	u32 i, i2ccmd = 0;
 	u16 phy_data_swapped;
 
+	/* Prevent overwritting SFP I2C EEPROM which is at A0 address.*/
+	if ((hw->phy.addr == 0) || (hw->phy.addr > 7)) {
+		hw_dbg("PHY I2C Address %d is out of range.\n",
+			  hw->phy.addr);
+		return -E1000_ERR_CONFIG;
+	}
 
 	/* Swap the data bytes for the I2C interface */
 	phy_data_swapped = ((data >> 8) & 0x00FF) | ((data << 8) & 0xFF00);