From: Bjorn Helgaas Date: Thu, 8 Sep 2016 21:43:40 +0000 (-0500) Subject: PCI: pciehp: Return IRQ_NONE when we can't read interrupt status X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=70e8b40176c75d3544024e7c934720b11a8a11bf;p=openwrt%2Fstaging%2Fblogic.git PCI: pciehp: Return IRQ_NONE when we can't read interrupt status After 1469d17dd341 ("PCI: pciehp: Handle invalid data when reading from non-existent devices"), we returned IRQ_HANDLED when we failed to read interrupt status from the bridge. I think it's better to return IRQ_NONE, as we do in other cases where there's no interrupt pending. This will facilitate refactoring the loop in pcie_isr(): we'll be able to call the ISR in a loop as long as it returns IRQ_HANDLED. Return IRQ_NONE if we couldn't read interrupt status. Tested-by: Lukas Wunner Signed-off-by: Bjorn Helgaas Reviewed-by: Mika Westerberg --- diff --git a/drivers/pci/hotplug/pciehp_hpc.c b/drivers/pci/hotplug/pciehp_hpc.c index 264df360444c..b8efe1bbc4f4 100644 --- a/drivers/pci/hotplug/pciehp_hpc.c +++ b/drivers/pci/hotplug/pciehp_hpc.c @@ -561,7 +561,7 @@ static irqreturn_t pcie_isr(int irq, void *dev_id) if (status == (u16) ~0) { ctrl_info(ctrl, "%s: no response from device\n", __func__); - return IRQ_HANDLED; + return IRQ_NONE; } /*