Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=5ed2c832ed256b18d90c2462369c62fd79312e6c
Commit: 5ed2c832ed256b18d90c2462369c62fd79312e6c
Parent: 9c7701088a61cc0cf8a6e1c68d1e74e3cc2ee0b7
Author: Dave Young <[EMAIL PROTECTED]>
AuthorDate: Tue Jan 22 15:14:18 2008 +0800
Committer: Greg Kroah-Hartman <[EMAIL PROTECTED]>
CommitDate: Thu Jan 24 20:40:45 2008 -0800
spi: use class iteration api
Convert to use the class iteration api.
Signed-off-by: Dave Young <[EMAIL PROTECTED]>
Acked-by: David Brownell <[EMAIL PROTECTED]>
Signed-off-by: Greg Kroah-Hartman <[EMAIL PROTECTED]>
---
drivers/spi/spi.c | 26 +++++++++++++++-----------
1 files changed, 15 insertions(+), 11 deletions(-)
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index 93e9de4..682a6a4 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -485,6 +485,15 @@ void spi_unregister_master(struct spi_master *master)
}
EXPORT_SYMBOL_GPL(spi_unregister_master);
+static int __spi_master_match(struct device *dev, void *data)
+{
+ struct spi_master *m;
+ u16 *bus_num = data;
+
+ m = container_of(dev, struct spi_master, dev);
+ return m->bus_num == *bus_num;
+}
+
/**
* spi_busnum_to_master - look up master associated with bus_num
* @bus_num: the master's bus number
@@ -499,17 +508,12 @@ struct spi_master *spi_busnum_to_master(u16 bus_num)
{
struct device *dev;
struct spi_master *master = NULL;
- struct spi_master *m;
-
- down(&spi_master_class.sem);
- list_for_each_entry(dev, &spi_master_class.children, node) {
- m = container_of(dev, struct spi_master, dev);
- if (m->bus_num == bus_num) {
- master = spi_master_get(m);
- break;
- }
- }
- up(&spi_master_class.sem);
+
+ dev = class_find_device(&spi_master_class, &bus_num,
+ __spi_master_match);
+ if (dev)
+ master = container_of(dev, struct spi_master, dev);
+ /* reference got in class_find_device */
return master;
}
EXPORT_SYMBOL_GPL(spi_busnum_to_master);
-
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