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@xxxxxxxxx>
Cc: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@xxxxxxx>
Cc: Phil Edworthy <phil.edworthy@xxxxxxxxxxx>
Cc: Simon Horman <horms+renesas@xxxxxxxxxxxx>
Cc: Wolfram Sang <wsa@xxxxxxxxxxxxx>
Cc: linux-renesas-soc@xxxxxxxxxxxxxxx
---
V2: No change
V3: No change
V4: Rebase on top of Lorenzo's pci/rcar, fix up the rebase breakage
induced by patches therein
---
drivers/pci/host/pcie-rcar.c | 17 ++++++++++++++---
1 file changed, 14 insertions(+), 3 deletions(-)
diff --git a/drivers/pci/host/pcie-rcar.c b/drivers/pci/host/pcie-rcar.c
index 0879880f7975..6bb1cdec26be 100644
--- a/drivers/pci/host/pcie-rcar.c
+++ b/drivers/pci/host/pcie-rcar.c
@@ -950,18 +950,25 @@ 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,
@@ -1108,7 +1115,7 @@ 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);
@@ -1151,6 +1158,10 @@ 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);
--
2.16.2
