Am Freitag, den 12.05.2017, 17:56 +0100 schrieb Joao Pinto:
> This patch adds the new interrupt api to pecie-designware, keeping the old
> one. A define was added to toggle between the two apis (for testing purposes).
>
> Signed-off-by: Joao Pinto <jpinto@xxxxxxxxxxxx>
> ---
> drivers/pci/dwc/pcie-designware-host.c | 241 ++++++++++++++++++++++++++++++++-
> drivers/pci/dwc/pcie-designware.h | 5 +
> 2 files changed, 244 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/pci/dwc/pcie-designware-host.c b/drivers/pci/dwc/pcie-designware-host.c
> index 28ed32b..6810ea10b 100644
> --- a/drivers/pci/dwc/pcie-designware-host.c
> +++ b/drivers/pci/dwc/pcie-designware-host.c
[...]
> +static int dw_pcie_irq_domain_alloc(struct irq_domain *domain,
> + unsigned int virq, unsigned int nr_irqs,
> + void *args)
> +{
> + struct dw_pcie *pci = domain->host_data;
> + struct pcie_port *pp = &pci->pp;
> + unsigned long bit;
> +
> + mutex_lock(&pp->lock);
> +
> + WARN_ON(nr_irqs != 1);
So the new API doesn't support multi MSI, where we need more than a
single contiguous MSI in a range? If this is the case then this change
is breaking real use-cases that work today.
Regards,
Luvas
