Commit 0c8a5f9d authored by Kishon Vijay Abraham I's avatar Kishon Vijay Abraham I Committed by Bjorn Helgaas
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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: default avatarKishon Vijay Abraham I <kishon@ti.com>
[bhelgaas: folded in static fix from Colin Ian King <colin.king@canonical.com>]
Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
parent cda370ec

drivers/misc/pci_endpoint_test.c

+5 −1
Original line number Diff line number Diff line
@@ -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;