crosstool-ng/patches/linux/2.6.11.3/100-arch_alpha_kernel_srcons.patch
Yann E. MORIN" b1e693e402 Renamed all patches file names so that locales are now irrelevant to sort the files.
Removed the locale check as it is now irrelevant.
Removed the experimental binutils 2.17.50.0.xx: 2.18 is here now.
2007-09-23 17:08:09 +00:00

135 lines
4.4 KiB
Diff

Date: Sun, 20 Mar 2005 20:26:02 -0800
From: Richard Henderson <rth@twiddle.net>
To: Andrew Morton <akpm@osdl.org>
Cc: Dan Kegel <dank@kegel.com>, jbglaw@lug-owl.de,
linux-kernel@vger.kernel.org, torvalds@osdl.org
Subject: Re: 2.6.11.3 build problem in arch/alpha/kernel/srcons.c with gcc-4.0
Message-ID: <20050321042602.GA3795@twiddle.net>
Mail-Followup-To: Andrew Morton <akpm@osdl.org>, Dan Kegel <dank@kegel.com>,
jbglaw@lug-owl.de, linux-kernel@vger.kernel.org, torvalds@osdl.org
References: <423E238F.3030805@kegel.com> <20050320190352.65cc1396.akpm@osdl.org>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20050320190352.65cc1396.akpm@osdl.org>
User-Agent: Mutt/1.4.1i
On Sun, Mar 20, 2005 at 07:03:52PM -0800, Andrew Morton wrote:
> Dan Kegel <dank@kegel.com> wrote:
> >
> > Anyone with an alpha care to suggest a fix for this?
> >
> > arch/alpha/kernel/srmcons.c: In function 'srmcons_open':
> > arch/alpha/kernel/srmcons.c:196: warning: 'srmconsp' may be used uninitialized in this function
> > make[1]: *** [arch/alpha/kernel/srmcons.o] Error 1
> > make: *** [arch/alpha/kernel] Error 2
> >
> > I get this when building the 2.6.11.3 kernel with a recent gcc-4.0 snapshot.
> >
>
> It's beyond gcc's ability to figure out that the code is OK. Options would
> be to disable -Werror, or to artificially initialise that variable.
Fixed thus.
Note that even with a _raw_read_trylock implementation, smp still
doesn't work. Everything that init spawns dies immediately. I
havn't had a chance to find out why yet...
[ Note: deleted changes to smp.c, since they didn't apply cleanly
to 2.6.11.3 (the function had moved, I guess), and they seemed unrelated.]
r~
You can import this changeset into BK by piping this whole message to:
'| bk receive [path to repository]' or apply the patch as usual.
===================================================================
ChangeSet@1.2289, 2005-03-20 12:29:41-08:00, rth@kanga.twiddle.home
[ALPHA] Elimitate two warnings from gcc4.
smp.c | 43 -------------------------------------------
srmcons.c | 27 ++++++++++-----------------
2 files changed, 10 insertions(+), 60 deletions(-)
diff -Nru a/arch/alpha/kernel/srmcons.c b/arch/alpha/kernel/srmcons.c
--- a/arch/alpha/kernel/srmcons.c 2005-03-20 20:23:28 -08:00
+++ b/arch/alpha/kernel/srmcons.c 2005-03-20 20:23:28 -08:00
@@ -164,29 +164,22 @@
unsigned long flags;
int retval = 0;
- spin_lock_irqsave(&srmconsp_lock, flags);
-
- do {
- if (srmconsp != NULL) {
- *ps = srmconsp;
- break;
- }
+ if (srmconsp == NULL) {
+ spin_lock_irqsave(&srmconsp_lock, flags);
srmconsp = kmalloc(sizeof(*srmconsp), GFP_KERNEL);
- if (srmconsp == NULL) {
+ if (srmconsp == NULL)
retval = -ENOMEM;
- break;
+ else {
+ srmconsp->tty = NULL;
+ spin_lock_init(&srmconsp->lock);
+ init_timer(&srmconsp->timer);
}
- srmconsp->tty = NULL;
- spin_lock_init(&srmconsp->lock);
- init_timer(&srmconsp->timer);
-
- *ps = srmconsp;
- } while(0);
-
- spin_unlock_irqrestore(&srmconsp_lock, flags);
+ spin_unlock_irqrestore(&srmconsp_lock, flags);
+ }
+ *ps = srmconsp;
return retval;
}
===================================================================
This BitKeeper patch contains the following changesets:
1.2289
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