Commit 48de36c5 authored by Emil Tantilov's avatar Emil Tantilov Committed by Jeff Kirsher

ixgbe: Check link wants report current link state

Currently check link reports the link state as down, if at any time
the link had previously gone down since the last time the LINKS
register was read.  This does not accurately reflect the function of
the check link call, which should be to return the CURRENT link
state. Code now reads the LINKS registers twice, once to clear the
previous and again to get the current value.
Signed-off-by: default avatarEmil Tantilov <emil.s.tantilov@intel.com>
Tested-by: default avatarStephen Ko <stephen.s.ko@intel.com>
Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
parent 76d97dd4
......@@ -2769,10 +2769,19 @@ s32 ixgbe_clear_vfta_generic(struct ixgbe_hw *hw)
s32 ixgbe_check_mac_link_generic(struct ixgbe_hw *hw, ixgbe_link_speed *speed,
bool *link_up, bool link_up_wait_to_complete)
{
u32 links_reg;
u32 links_reg, links_orig;
u32 i;
/* clear the old state */
links_orig = IXGBE_READ_REG(hw, IXGBE_LINKS);
links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS);
if (links_orig != links_reg) {
hw_dbg(hw, "LINKS changed from %08X to %08X\n",
links_orig, links_reg);
}
if (link_up_wait_to_complete) {
for (i = 0; i < IXGBE_LINK_UP_TIME; i++) {
if (links_reg & IXGBE_LINKS_UP) {
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment