[PATCH] xen/pci: remove redundant assignment to variable irq

[PATCH] xen/pci: remove redundant assignment to variable irq

[Colin King]

From: Colin Ian King <colin.king@canonical.com>

The variable irq is being initialized with a value that is never read
and it is being updated later with a new value.  The initialization is
redundant and can be removed.

Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
---
 arch/x86/pci/xen.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/pci/xen.c b/arch/x86/pci/xen.c
index 91220cc25854..80272eb49230 100644
--- a/arch/x86/pci/xen.c
+++ b/arch/x86/pci/xen.c
@@ -63,7 +63,7 @@ static int xen_pcifront_enable_irq(struct pci_dev *dev)
 static int xen_register_pirq(u32 gsi, int gsi_override, int triggering,
 			     bool set_pirq)
 {
-	int rc, pirq = -1, irq = -1;
+	int rc, pirq = -1, irq;
 	struct physdev_map_pirq map_irq;
 	int shareable = 0;
 	char *name;
-- 
2.25.1

Re: [PATCH] xen/pci: remove redundant assignment to variable irq

[Bjorn Helgaas]

[+cc Juergen, Boris]

On Thu, Apr 09, 2020 at 12:41:18PM +0100, Colin King wrote:
> From: Colin Ian King <colin.king@canonical.com>
> 
> The variable irq is being initialized with a value that is never read
> and it is being updated later with a new value.  The initialization is
> redundant and can be removed.
> 
> Addresses-Coverity: ("Unused value")
> Signed-off-by: Colin Ian King <colin.king@canonical.com>

Applied to pci/virtualization for v5.9, thanks!

I don't see this in linux-next yet, but if anybody else would prefer
to take it, let me know and I'll drop it.  

> ---
>  arch/x86/pci/xen.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/x86/pci/xen.c b/arch/x86/pci/xen.c
> index 91220cc25854..80272eb49230 100644
> --- a/arch/x86/pci/xen.c
> +++ b/arch/x86/pci/xen.c
> @@ -63,7 +63,7 @@ static int xen_pcifront_enable_irq(struct pci_dev *dev)
>  static int xen_register_pirq(u32 gsi, int gsi_override, int triggering,
>  			     bool set_pirq)
>  {
> -	int rc, pirq = -1, irq = -1;
> +	int rc, pirq = -1, irq;
>  	struct physdev_map_pirq map_irq;
>  	int shareable = 0;
>  	char *name;
> -- 
> 2.25.1
>