From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from bh-25.webhostbox.net ([208.91.199.152]:45985 "EHLO bh-25.webhostbox.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753598AbcJNQz7 (ORCPT ); Fri, 14 Oct 2016 12:55:59 -0400 Date: Fri, 14 Oct 2016 09:55:48 -0700 From: Guenter Roeck To: Javier Martinez Canillas Cc: linux-kernel@vger.kernel.org, linux-watchdog@vger.kernel.org, Wim Van Sebroeck Subject: Re: [PATCH 1/2] watchdog: bcm7038_wdt: fix module autoload Message-ID: <20161014165548.GA21425@roeck-us.net> References: <1476458631-29685-1-git-send-email-javier@osg.samsung.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1476458631-29685-1-git-send-email-javier@osg.samsung.com> Sender: linux-watchdog-owner@vger.kernel.org List-Id: linux-watchdog@vger.kernel.org On Fri, Oct 14, 2016 at 12:23:50PM -0300, Javier Martinez Canillas wrote: > If the driver is built as a module, autoload won't work because the module > alias information is not filled. So user-space can't match the registered > device with the corresponding module. > > Export the module alias information using the MODULE_DEVICE_TABLE() macro. > > Before this patch: > > $ modinfo drivers/watchdog/bcm7038_wdt.ko | grep alias > $ > > After this patch: > > $ modinfo drivers/watchdog/bcm7038_wdt.ko | grep alias > alias: of:N*T*Cbrcm,bcm7038-wdtC* > alias: of:N*T*Cbrcm,bcm7038-wdt > > Signed-off-by: Javier Martinez Canillas Reviewed-by: Guenter Roeck > --- > > drivers/watchdog/bcm7038_wdt.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/drivers/watchdog/bcm7038_wdt.c b/drivers/watchdog/bcm7038_wdt.c > index e238df4d75a2..4814c00b32f6 100644 > --- a/drivers/watchdog/bcm7038_wdt.c > +++ b/drivers/watchdog/bcm7038_wdt.c > @@ -216,6 +216,7 @@ static const struct of_device_id bcm7038_wdt_match[] = { > { .compatible = "brcm,bcm7038-wdt" }, > {}, > }; > +MODULE_DEVICE_TABLE(of, bcm7038_wdt_match); > > static struct platform_driver bcm7038_wdt_driver = { > .probe = bcm7038_wdt_probe, > -- > 2.7.4 >