linux-kernel - Re: [PATCH] rtc: Make rtc-ds1742 driver hotplug-aware

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Date:	Fri, 17 Aug 2007 12:59:24 +0200 (CEST)
From:	Jan Engelhardt <jengelh@...putergmbh.de>
To:	Atsushi Nemoto <anemo@....ocn.ne.jp>
cc:	a.zummo@...ertech.it, linux-kernel@...r.kernel.org,
	rtc-linux@...glegroups.com, dbrownell@...rs.sourceforge.net
Subject: Re: [PATCH] rtc: Make rtc-ds1742 driver hotplug-aware


On Aug 17 2007 01:06, Atsushi Nemoto wrote:
>Add an MODULE_ALIAS() to make this platform driver hotplug-aware.
>
>Signed-off-by: Atsushi Nemoto <anemo@....ocn.ne.jp>
>---
>diff --git a/drivers/rtc/rtc-ds1742.c b/drivers/rtc/rtc-ds1742.c
>index b2e5481..4bd22dc 100644
>--- a/drivers/rtc/rtc-ds1742.c
>+++ b/drivers/rtc/rtc-ds1742.c
>@@ -273,3 +273,4 @@ MODULE_AUTHOR("Atsushi Nemoto <anemo@....ocn.ne.jp>");
> MODULE_DESCRIPTION("Dallas DS1742 RTC driver");
> MODULE_LICENSE("GPL");
> MODULE_VERSION(DRV_VERSION);
>+MODULE_ALIAS("ds1742");

Why exactly is this needed? What script refers to the module as ds1742 instead
of rtc-ds1742? Regular hotplug (e.g. udev/modprobe) also go by PCI ID or
whatever is applicable and load the module which provides support for said ID.


	Jan
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