mlxsw: pci: Wait longer before accessing the device after reset

During initialization the driver issues a reset to the device and waits for 100ms before checking if the firmware is ready. The waiting is necessary because before that the device is irresponsive and the first read can result in a completion timeout. While 100ms is sufficient for Spectrum-1 and Spectrum-2, it is insufficient for Spectrum-3. Fix this by increasing the timeout to 200ms. Fixes: da38287 ("mlxsw: spectrum: Extend to support Spectrum-3 ASIC") Signed-off-by: Amit Cohen <[email protected]> Signed-off-by: Ido Schimmel <[email protected]> Signed-off-by: Jiri Pirko <[email protected]> Signed-off-by: David S. Miller <[email protected]>
josf · Feb 27, 2020 · ac004e8 · ac004e8
1 parent 23797b9
commit ac004e8
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/drivers/net/ethernet/mellanox/mlxsw/pci_hw.h b/drivers/net/ethernet/mellanox/mlxsw/pci_hw.h
@@ -28,7 +28,7 @@
 #define MLXSW_PCI_SW_RESET			0xF0010
 #define MLXSW_PCI_SW_RESET_RST_BIT		BIT(0)
 #define MLXSW_PCI_SW_RESET_TIMEOUT_MSECS	900000
-#define MLXSW_PCI_SW_RESET_WAIT_MSECS		100
+#define MLXSW_PCI_SW_RESET_WAIT_MSECS		200
 #define MLXSW_PCI_FW_READY			0xA1844
 #define MLXSW_PCI_FW_READY_MASK			0xFFFF
 #define MLXSW_PCI_FW_READY_MAGIC		0x5E