From: josua@solid-run.com
To: netdev@vger.kernel.org
Cc: Josua Mayer <josua@solid-run.com>,
"David S. Miller" <davem@davemloft.net>,
Andrew Lunn <andrew@lunn.ch>
Subject: [PATCH v2 4/4] net: mvmdio: defer probe of orion-mdio if a clock is not ready
Date: Tue, 9 Jul 2019 15:01:01 +0200 [thread overview]
Message-ID: <20190709130101.5160-5-josua@solid-run.com> (raw)
In-Reply-To: <20190709130101.5160-1-josua@solid-run.com>
From: Josua Mayer <josua@solid-run.com>
Defer probing of the orion-mdio interface when getting a clock returns
EPROBE_DEFER. This avoids locking up the Armada 8k SoC when mdio is used
before all clocks have been enabled.
Signed-off-by: Josua Mayer <josua@solid-run.com>
---
drivers/net/ethernet/marvell/mvmdio.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/net/ethernet/marvell/mvmdio.c b/drivers/net/ethernet/marvell/mvmdio.c
index eba18065a4da..f660cc2b8258 100644
--- a/drivers/net/ethernet/marvell/mvmdio.c
+++ b/drivers/net/ethernet/marvell/mvmdio.c
@@ -321,6 +321,10 @@ static int orion_mdio_probe(struct platform_device *pdev)
for (i = 0; i < ARRAY_SIZE(dev->clk); i++) {
dev->clk[i] = of_clk_get(pdev->dev.of_node, i);
+ if (PTR_ERR(dev->clk[i]) == -EPROBE_DEFER) {
+ ret = -EPROBE_DEFER;
+ goto out_clk;
+ }
if (IS_ERR(dev->clk[i]))
break;
clk_prepare_enable(dev->clk[i]);
@@ -366,6 +370,7 @@ static int orion_mdio_probe(struct platform_device *pdev)
if (dev->err_interrupt > 0)
writel(0, dev->regs + MVMDIO_ERR_INT_MASK);
+out_clk:
for (i = 0; i < ARRAY_SIZE(dev->clk); i++) {
if (IS_ERR(dev->clk[i]))
break;
--
2.16.4
next prev parent reply other threads:[~2019-07-09 13:01 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-06 15:18 [PATCH 0/4] Fix hang of Armada 8040 SoC in orion-mdio josua
2019-07-06 15:18 ` [PATCH 1/4] dt-bindings: allow up to four clocks for orion-mdio josua
2019-07-06 15:47 ` Andrew Lunn
2019-07-09 1:32 ` Rob Herring
2019-07-09 2:41 ` Andrew Lunn
2019-07-09 22:03 ` Rob Herring
2019-07-18 1:31 ` Andrew Lunn
2019-07-06 15:18 ` [PATCH 2/4] net: mvmdio: allow up to four clocks to be specified " josua
2019-07-06 15:47 ` Andrew Lunn
2019-07-06 15:18 ` [PATCH 3/4] net: mvmdio: print warning when orion-mdio has too many clocks josua
2019-07-06 16:09 ` Andrew Lunn
2019-07-06 16:21 ` Josua Mayer
2019-07-07 5:04 ` kbuild test robot
2019-07-06 15:19 ` [PATCH 4/4] net: mvmdio: defer probe of orion-mdio if a clock is not ready josua
2019-07-06 15:54 ` Andrew Lunn
2019-07-07 5:21 ` kbuild test robot
2019-07-09 13:00 ` [PATCH v2 0/4] Fix hang of Armada 8040 SoC in orion-mdio josua
2019-07-09 13:00 ` [PATCH v2 1/4] dt-bindings: allow up to four clocks for orion-mdio josua
2019-07-09 22:07 ` Rob Herring
2019-07-09 13:00 ` [PATCH v2 2/4] net: mvmdio: allow up to four clocks to be specified " josua
2019-07-09 13:01 ` [PATCH v2 3/4] net: mvmdio: print warning when orion-mdio has too many clocks josua
2019-07-09 13:14 ` Andrew Lunn
2019-07-09 13:01 ` josua [this message]
2019-07-09 13:15 ` [PATCH v2 4/4] net: mvmdio: defer probe of orion-mdio if a clock is not ready Andrew Lunn
2019-07-09 20:03 ` [PATCH v2 0/4] Fix hang of Armada 8040 SoC in orion-mdio David Miller
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