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authorDave Young <hidave.darkstar@gmail.com>2008-01-22 02:14:18 -0500
committerGreg Kroah-Hartman <gregkh@suse.de>2008-01-24 23:40:45 -0500
commit5ed2c832ed256b18d90c2462369c62fd79312e6c (patch)
tree3afce805114d8a580e66f9101ca36256d8c4c2dd /drivers/spi
parent9c7701088a61cc0cf8a6e1c68d1e74e3cc2ee0b7 (diff)
spi: use class iteration api
Convert to use the class iteration api. Signed-off-by: Dave Young <hidave.darkstar@gmail.com> Acked-by: David Brownell <david-b@pacbell.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/spi')
-rw-r--r--drivers/spi/spi.c26
1 files changed, 15 insertions, 11 deletions
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index 93e9de46977a..682a6a48fec3 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -485,6 +485,15 @@ void spi_unregister_master(struct spi_master *master)
485} 485}
486EXPORT_SYMBOL_GPL(spi_unregister_master); 486EXPORT_SYMBOL_GPL(spi_unregister_master);
487 487
488static int __spi_master_match(struct device *dev, void *data)
489{
490 struct spi_master *m;
491 u16 *bus_num = data;
492
493 m = container_of(dev, struct spi_master, dev);
494 return m->bus_num == *bus_num;
495}
496
488/** 497/**
489 * spi_busnum_to_master - look up master associated with bus_num 498 * spi_busnum_to_master - look up master associated with bus_num
490 * @bus_num: the master's bus number 499 * @bus_num: the master's bus number
@@ -499,17 +508,12 @@ struct spi_master *spi_busnum_to_master(u16 bus_num)
499{ 508{
500 struct device *dev; 509 struct device *dev;
501 struct spi_master *master = NULL; 510 struct spi_master *master = NULL;
502 struct spi_master *m; 511
503 512 dev = class_find_device(&spi_master_class, &bus_num,
504 down(&spi_master_class.sem); 513 __spi_master_match);
505 list_for_each_entry(dev, &spi_master_class.children, node) { 514 if (dev)
506 m = container_of(dev, struct spi_master, dev); 515 master = container_of(dev, struct spi_master, dev);
507 if (m->bus_num == bus_num) { 516 /* reference got in class_find_device */
508 master = spi_master_get(m);
509 break;
510 }
511 }
512 up(&spi_master_class.sem);
513 return master; 517 return master;
514} 518}
515EXPORT_SYMBOL_GPL(spi_busnum_to_master); 519EXPORT_SYMBOL_GPL(spi_busnum_to_master);