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| author | Marek Vasut <marek.vasut@gmail.com> | 2018-05-24 16:36:20 +0200 |
|---|---|---|
| committer | Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> | 2018-05-24 18:39:24 +0100 |
| commit | 53f1aebfbe46ffe422138758c9d015502740f714 (patch) | |
| tree | 3040e28809caafad52297e179797794b12dbb19c /drivers/pci/host | |
| parent | 80b8471e69d706d7622bbd633aca611d11b389b7 (diff) | |
| download | linux-53f1aebfbe46ffe422138758c9d015502740f714.tar.bz2 | |
PCI: rcar: Add missing irq_dispose_mapping() into failpath
The rcar_pcie_get_resources() is another misnomer with a side effect.
The function does not only get resources, but also maps MSI IRQs via
irq_of_parse_and_map(). In case anything fails afterward, the IRQ
mapping must be disposed through irq_dispose_mapping() which is not
done.
This patch handles irq_of_parse_and_map() failures in by disposing
of the mapping in rcar_pcie_get_resources() as well as in probe.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Phil Edworthy <phil.edworthy@renesas.com>
Cc: Simon Horman <horms+renesas@verge.net.au>
Cc: Wolfram Sang <wsa@the-dreams.de>
Cc: linux-renesas-soc@vger.kernel.org
Diffstat (limited to 'drivers/pci/host')
| -rw-r--r-- | drivers/pci/host/pcie-rcar.c | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/drivers/pci/host/pcie-rcar.c b/drivers/pci/host/pcie-rcar.c index b937467c5c0b..e6c60e14d77d 100644 --- a/drivers/pci/host/pcie-rcar.c +++ b/drivers/pci/host/pcie-rcar.c @@ -951,18 +951,25 @@ static int rcar_pcie_get_resources(struct rcar_pcie *pcie) i = irq_of_parse_and_map(dev->of_node, 0); if (!i) { dev_err(dev, "cannot get platform resources for msi interrupt\n"); - return -ENOENT; + err = -ENOENT; + goto err_irq1; } pcie->msi.irq1 = i; i = irq_of_parse_and_map(dev->of_node, 1); if (!i) { dev_err(dev, "cannot get platform resources for msi interrupt\n"); - return -ENOENT; + err = -ENOENT; + goto err_irq2; } pcie->msi.irq2 = i; return 0; + +err_irq2: + irq_dispose_mapping(pcie->msi.irq1); +err_irq1: + return err; } static int rcar_pcie_inbound_ranges(struct rcar_pcie *pcie, @@ -1109,7 +1116,7 @@ static int rcar_pcie_probe(struct platform_device *pdev) err = clk_prepare_enable(pcie->bus_clk); if (err) { dev_err(dev, "failed to enable bus clock: %d\n", err); - goto err_pm_put; + goto err_unmap_msi_irqs; } err = rcar_pcie_parse_map_dma_ranges(pcie, dev->of_node); @@ -1152,6 +1159,10 @@ static int rcar_pcie_probe(struct platform_device *pdev) err_clk_disable: clk_disable_unprepare(pcie->bus_clk); +err_unmap_msi_irqs: + irq_dispose_mapping(pcie->msi.irq2); + irq_dispose_mapping(pcie->msi.irq1); + err_pm_put: pm_runtime_put(dev); |