From 4988410f8d3a6fa04381072e2406a1d3979ffb95 Mon Sep 17 00:00:00 2001 From: Jayaprakash Shanmugam Date: Thu, 7 Sep 2017 08:05:55 -0400 Subject: i40e: Retry AQC GetPhyAbilities to overcome I2CRead hangs - When the I2C is busy, the PHY reads are delayed. The firmware will return EGAIN in these cases with an expectation that the SW will trigger the reads again - This patch retries the operation for a maximum period of 500ms Signed-off-by: Jayaprakash Shanmugam Tested-by: Andrew Bowers Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/i40evf/i40e_type.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/net/ethernet/intel/i40evf') diff --git a/drivers/net/ethernet/intel/i40evf/i40e_type.h b/drivers/net/ethernet/intel/i40evf/i40e_type.h index 9364b67fff9c..213b773dfad6 100644 --- a/drivers/net/ethernet/intel/i40evf/i40e_type.h +++ b/drivers/net/ethernet/intel/i40evf/i40e_type.h @@ -46,6 +46,9 @@ /* Max default timeout in ms, */ #define I40E_MAX_NVM_TIMEOUT 18000 +/* Max timeout in ms for the phy to respond */ +#define I40E_MAX_PHY_TIMEOUT 500 + /* Switch from ms to the 1usec global time (this is the GTIME resolution) */ #define I40E_MS_TO_GTIME(time) ((time) * 1000) -- cgit v1.2.3