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authorJean Delvare <khali@linux-fr.org>2007-09-09 12:54:16 +0200
committerGreg Kroah-Hartman <gregkh@suse.de>2007-10-12 14:51:07 -0700
commit1359555eb77d240b7c1d7ee75bb07e89e89770e4 (patch)
tree62ee852622700d23dffa7593c84420762e07147f
parent44b760a825fae65629fb04b1deeab68c6bef5c50 (diff)
Driver core: Make platform_device.id an int
While platform_device.id is a u32, platform_device_add() handles "-1" as a special id value. This has potential for confusion and bugs. Making it an int instead should prevent problems from happening in the future. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
-rw-r--r--drivers/base/platform.c7
-rw-r--r--include/linux/platform_device.h7
2 files changed, 8 insertions, 6 deletions
diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index a2e3910196e..fb560924148 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -161,7 +161,7 @@ static void platform_device_release(struct device *dev)
* Create a platform device object which can have other objects attached
* to it, and which will have attached objects freed when it is released.
*/
-struct platform_device *platform_device_alloc(const char *name, unsigned int id)
+struct platform_device *platform_device_alloc(const char *name, int id)
{
struct platform_object *pa;
@@ -245,7 +245,8 @@ int platform_device_add(struct platform_device *pdev)
pdev->dev.bus = &platform_bus_type;
if (pdev->id != -1)
- snprintf(pdev->dev.bus_id, BUS_ID_SIZE, "%s.%u", pdev->name, pdev->id);
+ snprintf(pdev->dev.bus_id, BUS_ID_SIZE, "%s.%d", pdev->name,
+ pdev->id);
else
strlcpy(pdev->dev.bus_id, pdev->name, BUS_ID_SIZE);
@@ -359,7 +360,7 @@ EXPORT_SYMBOL_GPL(platform_device_unregister);
* the Linux driver model. In particular, when such drivers are built
* as modules, they can't be "hotplugged".
*/
-struct platform_device *platform_device_register_simple(char *name, unsigned int id,
+struct platform_device *platform_device_register_simple(char *name, int id,
struct resource *res, unsigned int num)
{
struct platform_device *pdev;
diff --git a/include/linux/platform_device.h b/include/linux/platform_device.h
index 8bbd459eafd..e80804316cd 100644
--- a/include/linux/platform_device.h
+++ b/include/linux/platform_device.h
@@ -15,7 +15,7 @@
struct platform_device {
const char * name;
- u32 id;
+ int id;
struct device dev;
u32 num_resources;
struct resource * resource;
@@ -35,9 +35,10 @@ extern struct resource *platform_get_resource_byname(struct platform_device *, u
extern int platform_get_irq_byname(struct platform_device *, char *);
extern int platform_add_devices(struct platform_device **, int);
-extern struct platform_device *platform_device_register_simple(char *, unsigned int, struct resource *, unsigned int);
+extern struct platform_device *platform_device_register_simple(char *, int id,
+ struct resource *, unsigned int);
-extern struct platform_device *platform_device_alloc(const char *name, unsigned int id);
+extern struct platform_device *platform_device_alloc(const char *name, int id);
extern int platform_device_add_resources(struct platform_device *pdev, struct resource *res, unsigned int num);
extern int platform_device_add_data(struct platform_device *pdev, const void *data, size_t size);
extern int platform_device_add(struct platform_device *pdev);