linux-kernel - Re: [PATCH 5/5] uvesafb: improve parameter handling.

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Date:	Mon, 30 Mar 2009 22:15:54 +0200
From:	Michal Januszewski <spock@...too.org>
To:	Rusty Russell <rusty@...tcorp.com.au>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 5/5] uvesafb: improve parameter handling.

On Sat, Mar 28, 2009 at 15:24, Rusty Russell <rusty@...tcorp.com.au> wrote:
>
> 1) Now module_param(..., invbool, ...) requires a bool, and similarly
>   module_param(..., bool, ...) allows it, change pmi_setpal to a bool.
> 2) #define param_get_scroll to NULL, since it can never be called (perm
>   argument to module_param_named is 0).
> 3) Return -EINVAL from param_set_scroll if the value is bad, so it's
>   reported.
>
> Note that I don't think the old fb_get_options() is required for new
> drivers: the parameters automatically work as uvesafb.XXX=... anyway.
>
> Cc: Michal Januszewski <spock@...too.org>
> Signed-off-by: Rusty Russell <rusty@...tcorp.com.au>

Acked-by: Michał Januszewski <spock@...too.org>

> ---
>  drivers/video/uvesafb.c |   10 ++++------
>  1 file changed, 4 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/video/uvesafb.c b/drivers/video/uvesafb.c
> --- a/drivers/video/uvesafb.c
> +++ b/drivers/video/uvesafb.c
> @@ -45,7 +45,7 @@ static int mtrr               __devinitdata = 3; /* e
>  static int mtrr                __devinitdata = 3; /* enable mtrr by default */
>  static int blank       = 1;               /* enable blanking by default */
>  static int ypan                = 1;             /* 0: scroll, 1: ypan, 2: ywrap */
> -static int pmi_setpal  __devinitdata = 1; /* use PMI for palette changes */
> +static bool pmi_setpal __devinitdata = true; /* use PMI for palette changes */
>  static int nocrtc      __devinitdata; /* ignore CRTC settings */
>  static int noedid      __devinitdata; /* don't try DDC transfers */
>  static int vram_remap  __devinitdata; /* set amt. of memory to be used */
> @@ -2009,11 +2009,7 @@ static void __devexit uvesafb_exit(void)
>
>  module_exit(uvesafb_exit);
>
> -static int param_get_scroll(char *buffer, struct kernel_param *kp)
> -{
> -       return 0;
> -}
> -
> +#define param_get_scroll NULL
>  static int param_set_scroll(const char *val, struct kernel_param *kp)
>  {
>        ypan = 0;
> @@ -2024,6 +2020,8 @@ static int param_set_scroll(const char *
>                ypan = 1;
>        else if (!strcmp(val, "ywrap"))
>                ypan = 2;
> +       else
> +               return -EINVAL;
>
>        return 0;
>  }
>
>
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