target/linux/bcm27xx/patches-5.15/950-0322-PCI-brcmstb-Advertise-MSI-X-support.patch

   1 From 702580031a99544e76be9b85c0044c77f957748c Mon Sep 17 00:00:00 2001
   2 From: Phil Elwell <phil@raspberrypi.com>
   3 Date: Thu, 3 Dec 2020 13:44:42 +0000
   4 Subject: [PATCH] PCI: brcmstb: Advertise MSI-X support
   5
   6 Although the BRCMSTB PCIe interface doesn't technically support the
   7 MSI-X spec, in practise it seems to work provided no more than 32
   8 MSI-Xs are required. Add the required flag to the driver to allow
   9 experimentation with devices that demand MSI-X support.
  10
  11 Signed-off-by: Phil Elwell <phil@raspberrypi.com>
  12 ---
  13  drivers/pci/controller/pcie-brcmstb.c | 3 ++-
  14  1 file changed, 2 insertions(+), 1 deletion(-)
  15
  16 --- a/drivers/pci/controller/pcie-brcmstb.c
  17 +++ b/drivers/pci/controller/pcie-brcmstb.c
  18 @@ -471,7 +471,8 @@ static struct irq_chip brcm_msi_irq_chip
  19
  20  static struct msi_domain_info brcm_msi_domain_info = {
  21         /* Multi MSI is supported by the controller, but not by this driver */
  22 -       .flags  = (MSI_FLAG_USE_DEF_DOM_OPS | MSI_FLAG_USE_DEF_CHIP_OPS),
  23 +       .flags  = (MSI_FLAG_USE_DEF_DOM_OPS | MSI_FLAG_USE_DEF_CHIP_OPS |
  24 +                  MSI_FLAG_PCI_MSIX),
  25         .chip   = &brcm_msi_irq_chip,
  26  };
  27