From: Bernd Schmidt <bernds_cb1@t-online.de>
To: Arnd Bergmann <arnd@arndb.de>
Cc: Robin Getz <rgetz@blackfin.uclinux.org>,
luke Yang <luke.adi@gmail.com>, Andrew Morton <akpm@osdl.org>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/4] Blackfin: arch patch for 2.6.18
Date: Thu, 28 Sep 2006 11:31:33 +0200 [thread overview]
Message-ID: <451B9675.8070406@t-online.de> (raw)
In-Reply-To: <200609272257.02385.arnd@arndb.de>
Arnd Bergmann wrote:
> static inline void local_irq_enable(void)
> {
> unsigned long unused_flags;
> asm volatile ("sti %0;" : : "d" (unused_flags));
> }
>
> That completely avoids all the problems you might hit with macro expansion,
> while still compiling to the same code.
The operand is an input, not an output. We want to restore the proper
mask of enabled interrupts with the STI. That mask is in the global
irq_flags variable (which probably ought to have a different name that
doesn't invite clashes).
Bernd
next prev parent reply other threads:[~2006-09-28 9:32 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-09-27 16:25 [PATCH 1/4] Blackfin: arch patch for 2.6.18 Robin Getz
2006-09-27 16:36 ` Randy Dunlap
2006-09-27 16:41 ` Arnd Bergmann
2006-09-27 17:19 ` Robin Getz
2006-09-27 20:57 ` Arnd Bergmann
2006-09-28 9:31 ` Bernd Schmidt [this message]
2006-09-28 11:04 ` Arnd Bergmann
2006-09-28 11:39 ` Bernd Schmidt
2006-09-28 12:35 ` Arnd Bergmann
-- strict thread matches above, loose matches on Subject: below --
2006-09-27 23:01 Robin Getz
2006-09-27 22:56 Robin Getz
2006-09-27 21:22 Robin Getz
2006-09-27 21:36 ` Arnd Bergmann
2006-09-27 17:47 Robin Getz
2006-09-27 19:19 ` Jörn Engel
2006-09-25 23:21 Robin Getz
2006-09-23 23:25 Robin Getz
2006-09-24 7:29 ` David Woodhouse
2006-09-23 17:57 Robin Getz
2006-09-23 16:29 Robin Getz
2006-09-23 18:10 ` Arnd Bergmann
2006-09-21 3:32 Luke Yang
2006-09-21 9:59 ` Luke Yang
2006-09-23 0:18 ` Arnd Bergmann
2006-09-23 1:18 ` Randy.Dunlap
2006-09-23 1:24 ` Roland Dreier
2006-09-23 1:58 ` Mike Frysinger
2006-09-23 6:50 ` Mike Frysinger
2006-09-23 11:03 ` Arnd Bergmann
2006-09-23 11:15 ` Mike Frysinger
2006-09-23 11:29 ` Arnd Bergmann
2006-09-23 13:07 ` Arnd Bergmann
2006-09-23 11:28 ` Matthieu CASTET
2006-09-23 11:35 ` Mike Frysinger
2006-09-23 19:43 ` Arnd Bergmann
2006-09-24 3:49 ` Luke Yang
2006-09-24 3:35 ` Aubrey
2006-09-24 3:50 ` Randy Dunlap
2006-09-24 4:28 ` Aubrey
2006-09-25 6:54 ` Arnd Bergmann
2006-09-25 7:49 ` Aubrey
2006-09-25 9:26 ` Arnd Bergmann
2006-09-25 9:39 ` Luke Yang
2006-09-25 9:45 ` Aubrey
2006-09-25 15:39 ` Aubrey
2006-09-25 17:05 ` Arnd Bergmann
2006-09-26 3:42 ` Aubrey
2006-09-26 9:43 ` Arnd Bergmann
2006-09-27 10:04 ` Aubrey
2006-09-27 11:37 ` Arnd Bergmann
2006-09-23 21:27 ` David Woodhouse
2006-09-25 16:52 ` Randy Dunlap
2006-09-25 18:05 ` Mike Frysinger
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