lkml.org 
[lkml]   [2017]   [Jan]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
SubjectRe: [PATCH v2] PCI/MSI: pci-xgene-msi: Fix CPU hotplug registration handling
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

\
 
 \ /
  Last update: 2017-01-17 15:52    [W:0.188 / U:0.376 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site