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1906cf93f8
You might just say: 'Yeah! crosstool-NG's got its own repo!". Unfortunately, that's because the previous repo got damaged beyond repair and I had no backup. That means I'm putting backups in place in the afternoon. That also means we've lost history... :-(
135 lines
4.4 KiB
Diff
135 lines
4.4 KiB
Diff
Date: Sun, 20 Mar 2005 20:26:02 -0800
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From: Richard Henderson <rth@twiddle.net>
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To: Andrew Morton <akpm@osdl.org>
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Cc: Dan Kegel <dank@kegel.com>, jbglaw@lug-owl.de,
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linux-kernel@vger.kernel.org, torvalds@osdl.org
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Subject: Re: 2.6.11.3 build problem in arch/alpha/kernel/srcons.c with gcc-4.0
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Message-ID: <20050321042602.GA3795@twiddle.net>
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Mail-Followup-To: Andrew Morton <akpm@osdl.org>, Dan Kegel <dank@kegel.com>,
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jbglaw@lug-owl.de, linux-kernel@vger.kernel.org, torvalds@osdl.org
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References: <423E238F.3030805@kegel.com> <20050320190352.65cc1396.akpm@osdl.org>
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Mime-Version: 1.0
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Content-Type: text/plain; charset=us-ascii
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Content-Disposition: inline
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In-Reply-To: <20050320190352.65cc1396.akpm@osdl.org>
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User-Agent: Mutt/1.4.1i
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On Sun, Mar 20, 2005 at 07:03:52PM -0800, Andrew Morton wrote:
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> Dan Kegel <dank@kegel.com> wrote:
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> >
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> > Anyone with an alpha care to suggest a fix for this?
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> >
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> > arch/alpha/kernel/srmcons.c: In function 'srmcons_open':
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> > arch/alpha/kernel/srmcons.c:196: warning: 'srmconsp' may be used uninitialized in this function
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> > make[1]: *** [arch/alpha/kernel/srmcons.o] Error 1
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> > make: *** [arch/alpha/kernel] Error 2
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> >
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> > I get this when building the 2.6.11.3 kernel with a recent gcc-4.0 snapshot.
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> >
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>
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> It's beyond gcc's ability to figure out that the code is OK. Options would
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> be to disable -Werror, or to artificially initialise that variable.
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Fixed thus.
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Note that even with a _raw_read_trylock implementation, smp still
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doesn't work. Everything that init spawns dies immediately. I
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havn't had a chance to find out why yet...
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[ Note: deleted changes to smp.c, since they didn't apply cleanly
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to 2.6.11.3 (the function had moved, I guess), and they seemed unrelated.]
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r~
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You can import this changeset into BK by piping this whole message to:
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'| bk receive [path to repository]' or apply the patch as usual.
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===================================================================
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ChangeSet@1.2289, 2005-03-20 12:29:41-08:00, rth@kanga.twiddle.home
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[ALPHA] Elimitate two warnings from gcc4.
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smp.c | 43 -------------------------------------------
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srmcons.c | 27 ++++++++++-----------------
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2 files changed, 10 insertions(+), 60 deletions(-)
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diff -Nru a/arch/alpha/kernel/srmcons.c b/arch/alpha/kernel/srmcons.c
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--- a/arch/alpha/kernel/srmcons.c 2005-03-20 20:23:28 -08:00
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+++ b/arch/alpha/kernel/srmcons.c 2005-03-20 20:23:28 -08:00
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@@ -164,29 +164,22 @@
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unsigned long flags;
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int retval = 0;
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- spin_lock_irqsave(&srmconsp_lock, flags);
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-
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- do {
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- if (srmconsp != NULL) {
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- *ps = srmconsp;
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- break;
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- }
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+ if (srmconsp == NULL) {
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+ spin_lock_irqsave(&srmconsp_lock, flags);
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srmconsp = kmalloc(sizeof(*srmconsp), GFP_KERNEL);
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- if (srmconsp == NULL) {
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+ if (srmconsp == NULL)
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retval = -ENOMEM;
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- break;
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+ else {
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+ srmconsp->tty = NULL;
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+ spin_lock_init(&srmconsp->lock);
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+ init_timer(&srmconsp->timer);
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}
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- srmconsp->tty = NULL;
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- spin_lock_init(&srmconsp->lock);
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- init_timer(&srmconsp->timer);
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-
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- *ps = srmconsp;
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- } while(0);
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-
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- spin_unlock_irqrestore(&srmconsp_lock, flags);
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+ spin_unlock_irqrestore(&srmconsp_lock, flags);
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+ }
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+ *ps = srmconsp;
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return retval;
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}
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===================================================================
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This BitKeeper patch contains the following changesets:
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1.2289
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## Wrapped with gzip_uu ##
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M'XL( $!,/D( [56[V_;-A#]+/X5!Q38FFV628KZY<!!TJ98BP9;D"&?BL)@
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MCNT6L9,[6DIH.PI/,_/^=H^FCI7KV737WO;X*2\Y\QW^W?A/JP#==')YJDVG
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M+=HA'SU8!H1AS!@-^X"F=LJ<AT+R8@]9"['@52QT+BKA'%2W,]-):YML(?+.
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