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PCI: altera-msi: Remove IRQ handler and data in one go

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Call irq_set_chained_handler_and_data() to clear the chained handler
and the handler's data under irq_desc->lock.

See also 2cf5a03cb2 ("PCI/keystone: Fix race in installing chained
IRQ handler").

Link: https://lore.kernel.org/r/20210115212435.19940-1-martin@kaiser.cx
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
This commit is contained in:
Martin Kaiser 2021-01-15 22:24:33 +01:00 committed by Lorenzo Pieralisi
parent 7c53f6b671
commit 3f0ea2360e
1 changed files with 1 additions and 2 deletions
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3
drivers/pci/controller/pcie-altera-msi.c
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@ -204,8 +204,7 @@ static int altera_msi_remove(struct platform_device *pdev)
struct altera_msi *msi = platform_get_drvdata(pdev);
msi_writel(msi, 0, MSI_INTMASK);
irq_set_chained_handler(msi->irq, NULL);
irq_set_handler_data(msi->irq, NULL);
irq_set_chained_handler_and_data(msi->irq, NULL, NULL);
altera_free_domains(msi);