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| author |   Aman Sharma <amanharitsh123@gmail.com> | 2020-03-12 00:49:02 +0530 |
|---|---|---|
| committer |   Bjorn Helgaas <bhelgaas@google.com> | 2020-05-12 08:14:43 -0500 |
| commit | 0584bff09629666eea97c7ac428e55b00df211f5 (patch) | |
| tree | 0f1ffb119ca31d5fbb5b996a976eafaa120b98c7 /drivers/pci/controller/pci-v3-semi.c | |
| parent | driver core: platform: Clarify that IRQ 0 is invalid (diff) | |
| download | linux-dev-0584bff09629666eea97c7ac428e55b00df211f5.tar.xz linux-dev-0584bff09629666eea97c7ac428e55b00df211f5.zip | |
PCI: Check for platform_get_irq() failure consistently
The platform_get_irq*() interfaces return either a negative error number or
a valid IRQ. 0 is not a valid return value, so check for "< 0" to detect
failure as recommended by the function documentation.
On failure, return the error number from platform_get_irq*() instead of
making up a new one.
Link: https://lore.kernel.org/r/cover.1583952275.git.amanharitsh123@gmail.com
[bhelgaas: commit log, squash into one patch]
Signed-off-by: Aman Sharma <amanharitsh123@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Cc: Richard Zhu <hongxing.zhu@nxp.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Karthikeyan Mitran <m.karthikeyan@mobiveil.co.in>
Cc: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Cc: Ryder Lee <ryder.lee@mediatek.com>
Cc: Marc Gonzalez <marc.w.gonzalez@free.fr>
Diffstat (limited to 'drivers/pci/controller/pci-v3-semi.c')
| -rw-r--r-- | drivers/pci/controller/pci-v3-semi.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/pci/controller/pci-v3-semi.c b/drivers/pci/controller/pci-v3-semi.c index bd05221f5a22..a5bf945d2eda 100644 --- a/drivers/pci/controller/pci-v3-semi.c +++ b/drivers/pci/controller/pci-v3-semi.c @@ -777,9 +777,9 @@ static int v3_pci_probe(struct platform_device *pdev) /* Get and request error IRQ resource */ irq = platform_get_irq(pdev, 0); - if (irq <= 0) { + if (irq < 0) { dev_err(dev, "unable to obtain PCIv3 error IRQ\n"); - return -ENODEV; + return irq; } ret = devm_request_irq(dev, irq, v3_irq, 0, "PCIv3 error", v3); |