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| author | Kishon Vijay Abraham I <kishon@ti.com> | 2017-08-18 17:58:09 +0300 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2017-08-30 00:00:40 +0300 |
| commit | 0c8a5f9d89b988ecb612a53d9439db899866bf8b (patch) | |
| tree | 140122ae09a3c8bb9211cd96d5927d0dbb2fda0b /drivers/misc | |
| parent | cda370ec6d1f7b2567ef6f692d0df9358746ad5a (diff) | |
| download | linux-0c8a5f9d89b988ecb612a53d9439db899866bf8b.tar.xz | |
misc: pci_endpoint_test: Enable/Disable MSI using module param
In certain platforms like TI's DRA7 SoCs, use of legacy PCI interrupt is
exclusive with use of MSI (Section 24.9.4.6.2.1 Legacy PCI Interrupts in
http://www.ti.com/lit/ug/spruhz6i/spruhz6i.pdf).
However pci_endpoint_test driver enables MSI by default in probe. In order
for pci_endpoint_test to be able to test legacy interrupt, MSI should be
disabled. Add a module param 'no_msi' to disable MSI (only when legacy
interrupt has to be tested).
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
[bhelgaas: folded in static fix from Colin Ian King <colin.king@canonical.com>]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/pci_endpoint_test.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/misc/pci_endpoint_test.c b/drivers/misc/pci_endpoint_test.c index 1f37ad39b169..deb203026496 100644 --- a/drivers/misc/pci_endpoint_test.c +++ b/drivers/misc/pci_endpoint_test.c @@ -72,6 +72,11 @@ static DEFINE_IDA(pci_endpoint_test_ida); #define to_endpoint_test(priv) container_of((priv), struct pci_endpoint_test, \ miscdev) + +static bool no_msi; +module_param(no_msi, bool, 0444); +MODULE_PARM_DESC(no_msi, "Disable MSI interrupt in pci_endpoint_test"); + enum pci_barno { BAR_0, BAR_1, @@ -451,7 +456,6 @@ static int pci_endpoint_test_probe(struct pci_dev *pdev, int err; int irq = 0; int id; - bool no_msi = false; char name[20]; enum pci_barno bar; void __iomem *base; |