Messages in this thread Patch in this message | | | From | Jisheng Zhang <> | Subject | [PATCH v2 1/5] PCI: dwc: Fix dw_pcie_free_msi() if msi_irq is invalid | Date | Fri, 1 Mar 2019 05:03:27 +0000 |
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We should check msi_irq before calling irq_set_chained_handler() and irq_set_handler_data().
Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com> --- drivers/pci/controller/dwc/pcie-designware-host.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c index 0c18ab63811f..a94d3530b694 100644 --- a/drivers/pci/controller/dwc/pcie-designware-host.c +++ b/drivers/pci/controller/dwc/pcie-designware-host.c @@ -298,8 +298,10 @@ int dw_pcie_allocate_domains(struct pcie_port *pp) void dw_pcie_free_msi(struct pcie_port *pp) { - irq_set_chained_handler(pp->msi_irq, NULL); - irq_set_handler_data(pp->msi_irq, NULL); + if (pp->msi_irq) { + irq_set_chained_handler(pp->msi_irq, NULL); + irq_set_handler_data(pp->msi_irq, NULL); + } irq_domain_remove(pp->msi_domain); irq_domain_remove(pp->irq_domain); -- 2.20.1
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