Re: [PATCH]dgrs - Fixes Warnings when CONFIG_ISA and CONFIG_PCI are not enabled

[Richard Knutsson <ricknu-0@student.ltu.se>]

Ashutosh Naik wrote:

> This patch fixes compiler warnings when CONFIG_ISA and CONFIG_PCI are
> not enabled in the dgrc network driver.
>
> Signed-off-by: Ashutosh Naik <ashutosh.naik@gmail.com>
>
> --
> diff -Naurp linux-2.6.14/drivers/net/dgrs.c
> linux-2.6.14-git1/drivers/net/dgrs.c---
> linux-2.6.14/drivers/net/dgrs.c     2005-10-28 05:32:08.000000000
> +0530
> +++ linux-2.6.14-git1/drivers/net/dgrs.c        2005-11-01
> 10:30:03.000000000 +0530
> @@ -1549,8 +1549,12 @@ MODULE_PARM_DESC(nicmode, "Digi RightSwi
> static int __init dgrs_init_module (void)  {
>        int     i;
> -       int eisacount = 0, pcicount = 0;
> -
> +#ifdef CONFIG_EISA
> +       int eisacount = 0;
> +#endif
> +#ifdef CONFIG_PCI
> +       int pcicount = 0;
> +#endif
>        /*
>         *      Command line variable overrides
>         *              debug=NNN
> -
>  
Since eisacount and pcicount is doing the same task (and they are only 
used in sequence) and to preventing more #ifdef in the source-code, why 
not use the same variable? It will give an warning if both of them is 
not defined, but is that an issue? If so,
#if !defined CONFIG_EISA && !defined CONFIG_PCI
could encapsulate the variable to prevent that.

Posted 26'th of October and now also checked against 2.6.14-git1.

Signed-off-by: Richard Knutsson <ricknu-0@student.ltu.se>

---

diff -uNr a/drivers/net/dgrs.c b/drivers/net/dgrs.c
--- a/drivers/net/dgrs.c	2005-08-29 01:41:01.000000000 +0200
+++ b/drivers/net/dgrs.c	2005-10-26 15:53:43.000000000 +0200
@@ -1549,7 +1549,7 @@
static int __init dgrs_init_module (void)
{
	int	i;
-	int eisacount = 0, pcicount = 0;
+	int	count;

	/*
	 *	Command line variable overrides
@@ -1591,14 +1591,14 @@
	 *	Find and configure all the cards
	 */
#ifdef CONFIG_EISA
-	eisacount = eisa_driver_register(&dgrs_eisa_driver);
-	if (eisacount < 0)
-		return eisacount;
+	count = eisa_driver_register(&dgrs_eisa_driver);
+	if (count < 0)
+		return count;
#endif
#ifdef CONFIG_PCI
-	pcicount = pci_register_driver(&dgrs_pci_driver);
-	if (pcicount)
-		return pcicount;
+	count = pci_register_driver(&dgrs_pci_driver);
+	if (count)
+		return count;
#endif
	return 0;
}


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