Messages in this thread | | | From | David Brownell <> | Subject | Re: [PATCH 11/12] spi : Use mutex instead of semaphore in driver core | Date | Fri, 28 Dec 2007 17:37:12 -0800 |
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On Friday 28 December 2007, Dave Young wrote: > Signed-off-by: Dave Young <hidave.darkstar@gmail.com>
ACK ... if the driver core is changing, this is obvious.
> --- > 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); >
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