From: Arne Caspari <arne@datafloater.de>
To: Russell King <rmk+lkml@arm.linux.org.uk>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH] drivers/base/driver.c : driver_unregister
Date: Sat, 11 Dec 2004 20:24:01 +0100 [thread overview]
Message-ID: <41BB4951.2080304@datafloater.de> (raw)
In-Reply-To: <20041211191113.A13985@flint.arm.linux.org.uk>
Russell King wrote:
>On Sat, Dec 11, 2004 at 07:54:32PM +0100, Arne Caspari wrote:
>
>
>>I think the meaning of this patch is obvious: In driver_unregister, the
>>bus_remove_driver function call was called outside the driver unload
>>semaphore which should obviously protect it.
>>
>>
>
>No. The semaphore is there to ensure that the function does not
>return until the driver structure has a use count of zero. If you
>tested your patch, you'd find that your change would deadlock on
>the locked semaphore.
>
>
Russell,
Ah, now I understand that thing. Reading the comments again, I should
have seen the reason for this earlier.
I am sorry I can not test that patch since unloading of the modules I am
currently testing blocks anyway. This makes it very hard to test the
patch :-( and currently this was the reason why I was going to this.
Sorry if I caused any inconvenience.
/Arne
next prev parent reply other threads:[~2004-12-11 21:33 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-12-11 18:54 [PATCH] drivers/base/driver.c : driver_unregister Arne Caspari
2004-12-11 19:11 ` Russell King
2004-12-11 19:24 ` Arne Caspari [this message]
2004-12-13 7:21 ` Arne Caspari
2004-12-13 21:07 ` Matt Mackall
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=41BB4951.2080304@datafloater.de \
--to=arne@datafloater.de \
--cc=linux-kernel@vger.kernel.org \
--cc=rmk+lkml@arm.linux.org.uk \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.