From 438bd525e5240a48233cd3290f7fe66ff0167e20 Mon Sep 17 00:00:00 2001 From: Stefan Richter Date: Mon, 3 Jul 2006 12:02:32 -0400 Subject: [PATCH] ieee1394: dv1394: sem2mutex conversion Signed-off-by: Stefan Richter (not runtime-tested) Signed-off-by: Ben Collins --- drivers/ieee1394/dv1394-private.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'drivers/ieee1394/dv1394-private.h') diff --git a/drivers/ieee1394/dv1394-private.h b/drivers/ieee1394/dv1394-private.h index 80b5ac7fe38..7d1d2845b42 100644 --- a/drivers/ieee1394/dv1394-private.h +++ b/drivers/ieee1394/dv1394-private.h @@ -460,7 +460,7 @@ struct video_card { int dma_running; /* - 3) the sleeping semaphore 'sem' - this is used from process context only, + 3) the sleeping mutex 'mtx' - this is used from process context only, to serialize various operations on the video_card. Even though only one open() is allowed, we still need to prevent multiple threads of execution from entering calls like read, write, ioctl, etc. @@ -468,9 +468,9 @@ struct video_card { I honestly can't think of a good reason to use dv1394 from several threads at once, but we need to serialize anyway to prevent oopses =). - NOTE: if you need both spinlock and sem, take sem first to avoid deadlock! + NOTE: if you need both spinlock and mtx, take mtx first to avoid deadlock! */ - struct semaphore sem; + struct mutex mtx; /* people waiting for buffer space, please form a line here... */ wait_queue_head_t waitq; -- cgit v1.2.3