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path: root/drivers/spi/spi.c
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Diffstat (limited to 'drivers/spi/spi.c')
-rw-r--r--drivers/spi/spi.c23
1 files changed, 14 insertions, 9 deletions
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index 270e6211c2e3..6307428d2c94 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -366,7 +366,6 @@ spi_alloc_master(struct device *dev, unsigned size)
class_device_initialize(&master->cdev);
master->cdev.class = &spi_master_class;
- kobj_set_kset_s(&master->cdev, spi_master_class.subsys);
master->cdev.dev = get_device(dev);
spi_master_set_devdata(master, &master[1]);
@@ -466,14 +465,20 @@ EXPORT_SYMBOL_GPL(spi_unregister_master);
*/
struct spi_master *spi_busnum_to_master(u16 bus_num)
{
- char name[9];
- struct kobject *bus;
-
- snprintf(name, sizeof name, "spi%u", bus_num);
- bus = kset_find_obj(&spi_master_class.subsys.kset, name);
- if (bus)
- return container_of(bus, struct spi_master, cdev.kobj);
- return NULL;
+ struct class_device *cdev;
+ struct spi_master *master = NULL;
+ struct spi_master *m;
+
+ down(&spi_master_class.sem);
+ list_for_each_entry(cdev, &spi_master_class.children, node) {
+ m = container_of(cdev, struct spi_master, cdev);
+ if (m->bus_num == bus_num) {
+ master = spi_master_get(m);
+ break;
+ }
+ }
+ up(&spi_master_class.sem);
+ return master;
}
EXPORT_SYMBOL_GPL(spi_busnum_to_master);