From: Nir Dotan <nird@mellanox.com>
Date: Fri, 18 Jan 2019 15:57:57 +0000
Subject: mlxsw: pci: Return error on PCI reset timeout
Patch-mainline: v5.0-rc3
Git-commit: 67c14cc9b35055264fc0efed00159a7de1819f1b
References: git-fixes

Return an appropriate error in the case when the driver timeouts on waiting
for firmware to go out of PCI reset.

Fixes: 233fa44bd67a ("mlxsw: pci: Implement reset done check")
Signed-off-by: Nir Dotan <nird@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/ethernet/mellanox/mlxsw/pci.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/net/ethernet/mellanox/mlxsw/pci.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/pci.c
@@ -1367,10 +1367,10 @@ static int mlxsw_pci_sw_reset(struct mlx
 		u32 val = mlxsw_pci_read32(mlxsw_pci, FW_READY);
 
 		if ((val & MLXSW_PCI_FW_READY_MASK) == MLXSW_PCI_FW_READY_MAGIC)
-			break;
+			return 0;
 		cond_resched();
 	} while (time_before(jiffies, end));
-	return 0;
+	return -EBUSY;
 }
 
 static int mlxsw_pci_alloc_irq_vectors(struct mlxsw_pci *mlxsw_pci)