PCI: designware: Make MSI ISR shared IRQ aware

Browse source

On i.MX6 the host controller MSI IRQ is shared with PCI legacy INTD.  Make
sure we don't bail too early from the IRQ handler.

The issue is fairly theoretical as it would require a system setup with a
PCIe switch where one connected device is using legacy INTD and another one
using MSI, but better fix it now.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Richard Zhu <r65037@freescale.com>

...

This commit is contained in:

Lucas Stach 2014-03-28 17:52:58 +01:00 • committed by Bjorn Helgaas

parent 5c40eea778

commit 7f4f16eef5

3 changed files with 7 additions and 5 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

4

drivers/pci/host/pci-exynos.c

View file

6

drivers/pci/host/pcie-designware.c

View file

2

drivers/pci/host/pcie-designware.h

View file