linux-kernel - [PATCH 4.19 095/100] mlxsw: pci: Reincrease PCI reset timeout

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Message-Id: <20190430113613.315782422@linuxfoundation.org>
Date:   Tue, 30 Apr 2019 13:39:04 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Ido Schimmel <idosch@...lanox.com>,
        Jiri Pirko <jiri@...lanox.com>,
        "David S. Miller" <davem@...emloft.net>
Subject: [PATCH 4.19 095/100] mlxsw: pci: Reincrease PCI reset timeout

From: Ido Schimmel <idosch@...lanox.com>

[ Upstream commit 1ab3030193d25878b3b1409060e1e0a879800c95 ]

During driver initialization the driver sends a reset to the device and
waits for the firmware to signal that it is ready to continue.

Commit d2f372ba0914 ("mlxsw: pci: Increase PCI SW reset timeout")
increased the timeout to 13 seconds due to longer PHY calibration in
Spectrum-2 compared to Spectrum-1.

Recently it became apparent that this timeout is too short and therefore
this patch increases it again to a safer limit that will be reduced in
the future.

Fixes: c3ab435466d5 ("mlxsw: spectrum: Extend to support Spectrum-2 ASIC")
Fixes: d2f372ba0914 ("mlxsw: pci: Increase PCI SW reset timeout")
Signed-off-by: Ido Schimmel <idosch@...lanox.com>
Acked-by: Jiri Pirko <jiri@...lanox.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/net/ethernet/mellanox/mlxsw/pci_hw.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/ethernet/mellanox/mlxsw/pci_hw.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/pci_hw.h
@@ -27,7 +27,7 @@
 
 #define MLXSW_PCI_SW_RESET			0xF0010
 #define MLXSW_PCI_SW_RESET_RST_BIT		BIT(0)
-#define MLXSW_PCI_SW_RESET_TIMEOUT_MSECS	13000
+#define MLXSW_PCI_SW_RESET_TIMEOUT_MSECS	20000
 #define MLXSW_PCI_SW_RESET_WAIT_MSECS		100
 #define MLXSW_PCI_FW_READY			0xA1844
 #define MLXSW_PCI_FW_READY_MASK			0xFFFF