On Wednesday 09 October 2013 03:35 PM, Jingoo Han wrote: > On Wednesday, October 09, 2013 6:48 PM, Kishon Vijay Abraham I wrote: >> On Wednesday 09 October 2013 02:47 PM, Jingoo Han wrote: >>> On Wednesday, October 09, 2013 6:06 PM, Kishon Vijay Abraham I wrote: >>>> On Wednesday 09 October 2013 01:39 PM, Jingoo Han wrote: >>>>> Without irq_create_mapping(), the correct irq number cannot be >>>>> provided. In this case, it makes problem such as NULL deference. >>>>> Thus, irq_create_mapping() should be added for MSI. >>>>> >>>>> Signed-off-by: Jingoo Han <jg1.han@xxxxxxxxxxx> >>>>> Cc: Kishon Vijay Abraham I <kishon@xxxxxx> >>>>> --- >>>>> Tested on Exynos5440. >>>>> >>>>> drivers/pci/host/pcie-designware.c | 10 ++++------ >>>>> drivers/pci/host/pcie-designware.h | 1 + >>>>> 2 files changed, 5 insertions(+), 6 deletions(-) >>>>> >>>>> diff --git a/drivers/pci/host/pcie-designware.c b/drivers/pci/host/pcie-designware.c >>>>> index 8963017..e536bb6 100644 >>>>> --- a/drivers/pci/host/pcie-designware.c >>>>> +++ b/drivers/pci/host/pcie-designware.c >>>>> @@ -237,6 +237,8 @@ static int assign_irq(int no_irqs, struct msi_desc *desc, int *pos) >>>>> } >>>>> } >>>>> >>>>> + pp->msi_irq_start = irq_create_mapping(pp->irq_domain, 0); >>>>> + >>>> >>>> I think irq_create_mapping should be done for all the MSI irq lines instead of >>>> only the first line. So you might have to do for MAX_MSI_IRQS lines. >> >> Maybe it should be only till MAX_MSI_IRQS-1? I meant something like this, for (i = 0; i < MAX_MSI_IRQS; i++) irq_create_mapping(pp->irq_domain, i); That didn't give me any issues though. Thanks Kishon -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
