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ixgbe: Add bounds check for x540 LED functions 

This is an extension of commit 003287e0f0 ("ixgbevf: Correct parameter
sent to LED function"); add bounds checking to x540 functions to ensure the
index is valid.

Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Tony Nguyen 2016-11-09 10:48:48 -08:00 committed by Jeff Kirsher
parent 2bf1a87b90
commit 910c9c0f59
1 changed files with 7 additions and 2 deletions
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9
drivers/net/ethernet/intel/ixgbe/ixgbe_x540.c
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@ -780,8 +780,10 @@ s32 ixgbe_blink_led_start_X540(struct ixgbe_hw *hw, u32 index)
ixgbe_link_speed speed;
bool link_up;
/*
* Link should be up in order for the blink bit in the LED control
if (index > 3)
return IXGBE_ERR_PARAM;
/* Link should be up in order for the blink bit in the LED control
* register to work. Force link and speed in the MAC if link is down.
* This will be reversed when we stop the blinking.
*/
@ -814,6 +816,9 @@ s32 ixgbe_blink_led_stop_X540(struct ixgbe_hw *hw, u32 index)
u32 macc_reg;
u32 ledctl_reg;
if (index > 3)
return IXGBE_ERR_PARAM;
/* Restore the LED to its default value. */
ledctl_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
ledctl_reg &= ~IXGBE_LED_MODE_MASK(index);