diff options
authorCarolyn Wyborny <carolyn.wyborny@intel.com>2013-12-14 03:26:46 -0800
committerDavid S. Miller <davem@davemloft.net>2013-12-14 22:59:42 -0500
commitdf29df92adda751ac04ca5149d30014b5199db81 (patch)
parent3c325ced6aefa72d43a54e324df7562564c26f91 (diff)
igb: Fix for issue where values could be too high for udelay function.
This patch changes the igb_phy_has_link function to check the value of the parameter before deciding to use udelay or mdelay in order to be sure that the value is not too high for udelay function. CC: stable kernel <stable@vger.kernel.org> # 3.9+ Signed-off-by: Sunil K Pandey <sunil.k.pandey@intel.com> Signed-off-by: Kevin B Smith <kevin.b.smith@intel.com> Signed-off-by: Carolyn Wyborny <carolyn.wyborny@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/net/ethernet/intel/igb/e1000_phy.c b/drivers/net/ethernet/intel/igb/e1000_phy.c
index c4c4fe332c7e..ad2b74d95138 100644
--- a/drivers/net/ethernet/intel/igb/e1000_phy.c
+++ b/drivers/net/ethernet/intel/igb/e1000_phy.c
@@ -1728,7 +1728,10 @@ s32 igb_phy_has_link(struct e1000_hw *hw, u32 iterations,
* ownership of the resources, wait and try again to
* see if they have relinquished the resources yet.
- udelay(usec_interval);
+ if (usec_interval >= 1000)
+ mdelay(usec_interval/1000);
+ else
+ udelay(usec_interval);
ret_val = hw->phy.ops.read_reg(hw, PHY_STATUS, &phy_status);
if (ret_val)