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i40e: fix for queue timing delays

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This patch adds a delay to Rx queue disables to accommodate HW needs.

v2: Added missing check for disable only, additional details on the
need for the ugly delay and fixed spacing on comment.

Change-ID: I2864ca667ce5dcc2cc44f8718113b719742a46a1
Signed-off-by: Carolyn Wyborny <carolyn.wyborny@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:
Wyborny, Carolyn 2017-03-28 08:00:48 -07:00 committed by Jeff Kirsher
parent dab86afdbb
commit d08a9f6cd1
1 changed files with 6 additions and 0 deletions
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6
drivers/net/ethernet/intel/i40e/i40e_main.c
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@ -4067,6 +4067,12 @@ static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
}
}
/* Due to HW errata, on Rx disable only, the register can indicate done
* before it really is. Needs 50ms to be sure
*/
if (!enable)
mdelay(50);
return ret;
}