Re: [PATCH] telephony/ixj: fix compiler warning on ixj_pci_tbl

[Andrew Morton <akpm@linux-foundation.org>]

On Wed,  8 Dec 2010 00:49:53 +0900
Namhyung Kim <namhyung@gmail.com> wrote:

> Annotate ixj_pci_tbl as '__used' to fix following warning:
> 
>   CC      drivers/telephony/ixj.o
> drivers/telephony/ixj.c:287: warning: ___ixj_pci_tbl___ defined but not used
> 
> Signed-off-by: Namhyung Kim <namhyung@gmail.com>
> ---
>  drivers/telephony/ixj.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/drivers/telephony/ixj.c b/drivers/telephony/ixj.c
> index 0d236f4..de92133 100644
> --- a/drivers/telephony/ixj.c
> +++ b/drivers/telephony/ixj.c
> @@ -284,7 +284,7 @@ static int samplerate = 100;
>  
>  module_param(ixjdebug, int, 0);
>  
> -static struct pci_device_id ixj_pci_tbl[] __devinitdata = {
> +static struct pci_device_id ixj_pci_tbl[] __devinitdata __used = {
>  	{ PCI_VENDOR_ID_QUICKNET, PCI_DEVICE_ID_QUICKNET_XJ,
>  	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
>  	{ }

This way, I believe:

--- a/drivers/telephony/ixj.c~a
+++ a/drivers/telephony/ixj.c
@@ -284,12 +284,11 @@ static int samplerate = 100;
 
 module_param(ixjdebug, int, 0);
 
-static struct pci_device_id ixj_pci_tbl[] __devinitdata = {
+static DEFINE_PCI_DEVICE_TABLE(ixj_pci_tbl) = {
 	{ PCI_VENDOR_ID_QUICKNET, PCI_DEVICE_ID_QUICKNET_XJ,
 	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
 	{ }
 };
-
 MODULE_DEVICE_TABLE(pci, ixj_pci_tbl);
 
 /************************************************************************

It fixes the warning, but I'm not sure how it did that.