* [PATCH 7/7] spi : convert semaphore to mutex in struct class
@ 2008-01-03 6:02 Dave Young
0 siblings, 0 replies; only message in thread
From: Dave Young @ 2008-01-03 6:02 UTC (permalink / raw)
To: dbrownell-Rn4VEauK+AKRv+LV9MX5uipxlwaOVQ5f
Cc: spi-devel-general-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f,
linux-kernel-u79uwXL29TY76Z2rM5mHXA
Use mutex instead of semaphore in struct class.
Signed-off-by: Dave Young <hidave.darkstar-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
---
drivers/spi/spi.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff -upr linux/drivers/spi/spi.c linux.new/drivers/spi/spi.c
--- linux/drivers/spi/spi.c 2007-12-28 10:47:38.000000000 +0800
+++ linux.new/drivers/spi/spi.c 2007-12-28 10:48:22.000000000 +0800
@@ -494,7 +494,7 @@ struct spi_master *spi_busnum_to_master(
struct spi_master *master = NULL;
struct spi_master *m;
- down(&spi_master_class.sem);
+ mutex_lock(&spi_master_class.mutex);
list_for_each_entry(dev, &spi_master_class.children, node) {
m = container_of(dev, struct spi_master, dev);
if (m->bus_num == bus_num) {
@@ -502,7 +502,7 @@ struct spi_master *spi_busnum_to_master(
break;
}
}
- up(&spi_master_class.sem);
+ mutex_unlock(&spi_master_class.mutex);
return master;
}
EXPORT_SYMBOL_GPL(spi_busnum_to_master);
-------------------------------------------------------------------------
This SF.net email is sponsored by: Microsoft
Defy all challenges. Microsoft(R) Visual Studio 2005.
http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2008-01-03 6:02 UTC | newest]
Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2008-01-03 6:02 [PATCH 7/7] spi : convert semaphore to mutex in struct class Dave Young
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).