2017-06-13 07:18:56

by Arvind Yadav

Subject: [PATCH] PCI: dwc: dra7xx: Fix compilation warning.

drivers/pci/dwc/pci-dra7xx.c: In function ‘dra7xx_pcie_enable_msi_interrupts’:
drivers/pci/dwc/pci-dra7xx.c:177:7: warning: large integer implicitly truncated to unsigned type [-Woverflow]
~LEG_EP_INTERRUPTS & ~MSI);
^
drivers/pci/dwc/pci-dra7xx.c: In function ‘dra7xx_pcie_enable_wrapper_interrupts’:
drivers/pci/dwc/pci-dra7xx.c:187:7: warning: large integer implicitly truncated to unsigned type [-Woverflow]
~INTERRUPTS);

Signed-off-by: Arvind Yadav <[email protected]>
---
drivers/pci/dwc/pci-dra7xx.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/pci/dwc/pci-dra7xx.c b/drivers/pci/dwc/pci-dra7xx.c
index 8decf46..328d480 100644
--- a/drivers/pci/dwc/pci-dra7xx.c
+++ b/drivers/pci/dwc/pci-dra7xx.c
@@ -174,7 +174,7 @@ static int dra7xx_pcie_establish_link(struct dw_pcie *pci)
static void dra7xx_pcie_enable_msi_interrupts(struct dra7xx_pcie *dra7xx)
{
dra7xx_pcie_writel(dra7xx, PCIECTRL_DRA7XX_CONF_IRQSTATUS_MSI,
- ~LEG_EP_INTERRUPTS & ~MSI);
+ (u32)~LEG_EP_INTERRUPTS & (u32)~MSI);

dra7xx_pcie_writel(dra7xx,
PCIECTRL_DRA7XX_CONF_IRQENABLE_SET_MSI,
@@ -184,7 +184,7 @@ static void dra7xx_pcie_enable_msi_interrupts(struct dra7xx_pcie *dra7xx)
static void dra7xx_pcie_enable_wrapper_interrupts(struct dra7xx_pcie *dra7xx)
{
dra7xx_pcie_writel(dra7xx, PCIECTRL_DRA7XX_CONF_IRQSTATUS_MAIN,
- ~INTERRUPTS);
+ (u32)~INTERRUPTS);
dra7xx_pcie_writel(dra7xx, PCIECTRL_DRA7XX_CONF_IRQENABLE_SET_MAIN,
INTERRUPTS);
}
--
1.9.1

2017-06-14 16:11:18

by Bjorn Helgaas

Subject: Re: [PATCH] PCI: dwc: dra7xx: Fix compilation warning.

On Tue, Jun 13, 2017 at 12:48:24PM +0530, Arvind Yadav wrote:
> drivers/pci/dwc/pci-dra7xx.c: In function ‘dra7xx_pcie_enable_msi_interrupts’:
> drivers/pci/dwc/pci-dra7xx.c:177:7: warning: large integer implicitly truncated to unsigned type [-Woverflow]
> ~LEG_EP_INTERRUPTS & ~MSI);
> ^
> drivers/pci/dwc/pci-dra7xx.c: In function ‘dra7xx_pcie_enable_wrapper_interrupts’:
> drivers/pci/dwc/pci-dra7xx.c:187:7: warning: large integer implicitly truncated to unsigned type [-Woverflow]
> ~INTERRUPTS);
>
> Signed-off-by: Arvind Yadav <[email protected]>
> ---
> drivers/pci/dwc/pci-dra7xx.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/pci/dwc/pci-dra7xx.c b/drivers/pci/dwc/pci-dra7xx.c
> index 8decf46..328d480 100644
> --- a/drivers/pci/dwc/pci-dra7xx.c
> +++ b/drivers/pci/dwc/pci-dra7xx.c
> @@ -174,7 +174,7 @@ static int dra7xx_pcie_establish_link(struct dw_pcie *pci)
> static void dra7xx_pcie_enable_msi_interrupts(struct dra7xx_pcie *dra7xx)
> {
> dra7xx_pcie_writel(dra7xx, PCIECTRL_DRA7XX_CONF_IRQSTATUS_MSI,
> - ~LEG_EP_INTERRUPTS & ~MSI);
> + (u32)~LEG_EP_INTERRUPTS & (u32)~MSI);

Can you put the casts in the definitions of LEG_EP_INTERRUPTS, MSI,
INTERRUPTS, etc., instead of at every use?

>
> dra7xx_pcie_writel(dra7xx,
> PCIECTRL_DRA7XX_CONF_IRQENABLE_SET_MSI,
> @@ -184,7 +184,7 @@ static void dra7xx_pcie_enable_msi_interrupts(struct dra7xx_pcie *dra7xx)
> static void dra7xx_pcie_enable_wrapper_interrupts(struct dra7xx_pcie *dra7xx)
> {
> dra7xx_pcie_writel(dra7xx, PCIECTRL_DRA7XX_CONF_IRQSTATUS_MAIN,
> - ~INTERRUPTS);
> + (u32)~INTERRUPTS);
> dra7xx_pcie_writel(dra7xx, PCIECTRL_DRA7XX_CONF_IRQENABLE_SET_MAIN,
> INTERRUPTS);
> }
> --
> 1.9.1
>