| Message ID | 1484662916-9549-1-git-send-email-marc.zyngier@arm.com (mailing list archive) |
|---|---|
| State | New, archived |
| Delegated to: | Bjorn Helgaas |
| Headers | show |
On Tue, Jan 17, 2017 at 02:21:56PM +0000, Marc Zyngier wrote: > The conversion to the new hotplug state machine introduced a regression > where a successful hotplug registration would be treated as an error, > effectively disabling the MSI driver forever. > > Fix it by doing the proper check on the return value. > > Cc: Bjorn Helgaas <bhelgaas@google.com> > Cc: Thomas Gleixner <tglx@linutronix.de> > Cc: stable@vger.kernel.org > Fixes: 9c248f8896e6 ("PCI/xgene-msi: Convert to hotplug state machine") > Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> > Tested-by: Duc Dang <dhdang@apm.com> > Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Applied to for-linus for v4.10, thanks! > --- > * From v1: added Sebastian's Ack and Duc's Tested-by, cc'ing linux-pci > > drivers/pci/host/pci-xgene-msi.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/pci/host/pci-xgene-msi.c b/drivers/pci/host/pci-xgene-msi.c > index 1f38d08..f1b633b 100644 > --- a/drivers/pci/host/pci-xgene-msi.c > +++ b/drivers/pci/host/pci-xgene-msi.c > @@ -517,7 +517,7 @@ static int xgene_msi_probe(struct platform_device *pdev) > > rc = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "pci/xgene:online", > xgene_msi_hwirq_alloc, NULL); > - if (rc) > + if (rc < 0) > goto err_cpuhp; > pci_xgene_online = rc; > rc = cpuhp_setup_state(CPUHP_PCI_XGENE_DEAD, "pci/xgene:dead", NULL, > -- > 2.1.4 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-pci" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/pci/host/pci-xgene-msi.c b/drivers/pci/host/pci-xgene-msi.c index 1f38d08..f1b633b 100644 --- a/drivers/pci/host/pci-xgene-msi.c +++ b/drivers/pci/host/pci-xgene-msi.c @@ -517,7 +517,7 @@ static int xgene_msi_probe(struct platform_device *pdev) rc = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "pci/xgene:online", xgene_msi_hwirq_alloc, NULL); - if (rc) + if (rc < 0) goto err_cpuhp; pci_xgene_online = rc; rc = cpuhp_setup_state(CPUHP_PCI_XGENE_DEAD, "pci/xgene:dead", NULL,
The conversion to the new hotplug state machine introduced a regression where a successful hotplug registration would be treated as an error, effectively disabling the MSI driver forever. Fix it by doing the proper check on the return value. Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: stable@vger.kernel.org Fixes: 9c248f8896e6 ("PCI/xgene-msi: Convert to hotplug state machine") Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Tested-by: Duc Dang <dhdang@apm.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> --- * From v1: added Sebastian's Ack and Duc's Tested-by, cc'ing linux-pci drivers/pci/host/pci-xgene-msi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)