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| author |   David Engraf <david.engraf@sysgo.com> | 2019-12-16 12:18:25 +0100 |
|---|---|---|
| committer |   Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> | 2020-01-10 17:29:39 +0000 |
| commit | 885199148442f56b880995d703d2ed03b6481a3c (patch) | |
| tree | 821762a3a9a0905ed91bbb970a94c874c4c38e15 /drivers/pci | |
| parent | Linux 5.5-rc1 (diff) | |
| download | linux-dev-885199148442f56b880995d703d2ed03b6481a3c.tar.xz linux-dev-885199148442f56b880995d703d2ed03b6481a3c.zip | |
PCI: tegra: Fix return value check of pm_runtime_get_sync()
pm_runtime_get_sync() returns the device's usage counter. This might
be >0 if the device is already powered up or CONFIG_PM is disabled.
Abort probe function on real error only.
Fixes: da76ba50963b ("PCI: tegra: Add power management support")
Link: https://lore.kernel.org/r/20191216111825.28136-1-david.engraf@sysgo.com
Signed-off-by: David Engraf <david.engraf@sysgo.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Andrew Murray <andrew.murray@arm.com>
Cc: stable@vger.kernel.org # v4.17+
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/controller/pci-tegra.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/pci/controller/pci-tegra.c b/drivers/pci/controller/pci-tegra.c index 673a1725ef38..090b632965e2 100644 --- a/drivers/pci/controller/pci-tegra.c +++ b/drivers/pci/controller/pci-tegra.c @@ -2798,7 +2798,7 @@ static int tegra_pcie_probe(struct platform_device *pdev) pm_runtime_enable(pcie->dev); err = pm_runtime_get_sync(pcie->dev); - if (err) { + if (err < 0) { dev_err(dev, "fail to enable pcie controller: %d\n", err); goto teardown_msi; } |