Re: [PATCH] hpet: Fix missing '=' character in the __setup() code of hpet_mmap_enable.

[Greg KH <gregkh@linuxfoundation.org>]

On Wed, Dec 19, 2018 at 02:55:02PM +0530, Buland Singh wrote:
> The kernel command parameter 'hpet_mmap' never takes effect due to missing
> '=' character in the __setup() code of hpet_mmap_enable and the memory map
> of the HPET registers never get expose to userspace.
> 
> Signed-off-by: Buland Singh <bsingh@redhat.com>
> ---
>  drivers/char/hpet.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/char/hpet.c b/drivers/char/hpet.c
> index 4a22b4b41aef..9bffcd37cc7b 100644
> --- a/drivers/char/hpet.c
> +++ b/drivers/char/hpet.c
> @@ -377,7 +377,7 @@ static __init int hpet_mmap_enable(char *str)
>  	pr_info("HPET mmap %s\n", hpet_mmap_enabled ? "enabled" : "disabled");
>  	return 1;
>  }
> -__setup("hpet_mmap", hpet_mmap_enable);
> +__setup("hpet_mmap=", hpet_mmap_enable);

What commit caused this bug?  Should this go to the stable kernel trees?

thanks,

greg k-h