From: Ingo Molnar <mingo@elte.hu>
Date: Mon, 3 Jul 2006 07:25:24 +0000 (-0700)
Subject: [PATCH] lockdep: annotate 3c59x.c disable_irq()
X-Git-Tag: v2.6.18-rc1~46
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0a9da4bd8eb30fb3f36e841c2cc72e426a17bbe2;p=linux-2.6

[PATCH] lockdep: annotate 3c59x.c disable_irq()

3c59x.c's vortex_timer() function knows that vp->lock can only be used by an
irq context that it disabled - and can hence take the vp->lock without
disabling hardirqs.  Teach lockdep about this.

Has no effect on non-lockdep kernels.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/drivers/net/3c59x.c b/drivers/net/3c59x.c
index 8ab03b4a88..2819de7944 100644
--- a/drivers/net/3c59x.c
+++ b/drivers/net/3c59x.c
@@ -1897,7 +1897,7 @@ vortex_timer(unsigned long data)
 		printk(KERN_DEBUG "dev->watchdog_timeo=%d\n", dev->watchdog_timeo);
 	}
 
-	disable_irq(dev->irq);
+	disable_irq_lockdep(dev->irq);
 	old_window = ioread16(ioaddr + EL3_CMD) >> 13;
 	EL3WINDOW(4);
 	media_status = ioread16(ioaddr + Wn4_Media);
@@ -1978,7 +1978,7 @@ leave_media_alone:
 			 dev->name, media_tbl[dev->if_port].name);
 
 	EL3WINDOW(old_window);
-	enable_irq(dev->irq);
+	enable_irq_lockdep(dev->irq);
 	mod_timer(&vp->timer, RUN_AT(next_tick));
 	if (vp->deferred)
 		iowrite16(FakeIntr, ioaddr + EL3_CMD);