[PATCH] PCI: tegra: Fix shiftTooManyBitsSigned warning for Tegra194

[Jon Hunter <jonathanh@nvidia.com>]

The cppcheck tool issues the following warning for the Tegra194 PCIe
driver ...

 $ cppcheck --enable=all drivers/pci/controller/dwc/pcie-tegra194.c
 Checking drivers/pci/controller/dwc/pcie-tegra194.c ...

 drivers/pci/controller/dwc/pcie-tegra194.c:1829:23: portability:
	Shifting signed 32-bit value by 31 bits is
	implementation-defined behaviour. See condition at line 1826.
	[shiftTooManyBitsSigned]

  appl_writel(pcie, (1 << irq), APPL_MSI_CTRL_1);
                      ^
The above warning occurs because the '1' is treated as a signed type
and so fix this by using the 'BIT' macro to ensure that this is defined
as a unsigned type.

Fixes: c57247f940e8 PCI: tegra: Add support for PCIe endpoint mode in Tegra194
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
---
 drivers/pci/controller/dwc/pcie-tegra194.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pci/controller/dwc/pcie-tegra194.c b/drivers/pci/controller/dwc/pcie-tegra194.c
index 8fc08336f76e..3c1feeab104f 100644
--- a/drivers/pci/controller/dwc/pcie-tegra194.c
+++ b/drivers/pci/controller/dwc/pcie-tegra194.c
@@ -1826,7 +1826,7 @@ static int tegra_pcie_ep_raise_msi_irq(struct tegra_pcie_dw *pcie, u16 irq)
 	if (unlikely(irq > 31))
 		return -EINVAL;
 
-	appl_writel(pcie, (1 << irq), APPL_MSI_CTRL_1);
+	appl_writel(pcie, BIT(irq), APPL_MSI_CTRL_1);
 
 	return 0;
 }
-- 
2.25.1