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 <[email protected]>
---
I still believe that we can further clean up this area, but that will
do for now.
drivers/base/platform.c | 7 ++++---
include/linux/platform_device.h | 7 ++++---
2 files changed, 8 insertions(+), 6 deletions(-)
--- linux-2.6.23-rc5.orig/drivers/base/platform.c 2007-07-09 14:49:46.000000000 +0200
+++ linux-2.6.23-rc5/drivers/base/platform.c 2007-09-09 12:15:24.000000000 +0200
@@ -166,7 +166,7 @@ static void platform_device_release(stru
* the device isn't being dynamically allocated as a legacy "probe the
* hardware" driver, infrastructure code should reverse this marking.
*/
-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;
@@ -256,7 +256,8 @@ int platform_device_add(struct platform_
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);
@@ -370,7 +371,7 @@ EXPORT_SYMBOL_GPL(platform_device_unregi
* 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;
--- linux-2.6.23-rc5.orig/include/linux/platform_device.h 2007-02-04 19:44:54.000000000 +0100
+++ linux-2.6.23-rc5/include/linux/platform_device.h 2007-09-09 12:15:41.000000000 +0200
@@ -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_res
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);
--
Jean Delvare
-
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