platform: prefix MODALIAS with "platform:"

Prefix platform modalias strings with "platform:", which
modprobe config to blacklist alias resolving if userspace
configures it.

Send uevents for all platform devices.

Add MODULE_ALIAS's to: pxa2xx_pcmcia, ds1742 and pcspkr to trigger
module autoloading by userspace.

  $ modinfo pcspkr
  alias:          platform:pcspkr
  license:        GPL
  description:    PC Speaker beeper driver
  ...

  $ modprobe -n -v platform:pcspkr
  insmod /lib/modules/2.6.23-rc3-g28e8351a-dirty/kernel/drivers/input/misc/pcspkr.ko
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Cc: David Brownell <david-b@pacbell.net>
Cc: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/base/platform.c

@@ -160,11 +160,6 @@ 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.
- *
- *	This device will be marked as not supporting hotpluggable drivers; no
- *	device add/remove uevents will be generated.  In the unusual case that
- *	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)
 {
@@ -177,12 +172,6 @@ struct platform_device *platform_device_alloc(const char *name, unsigned int id)
 		pa->pdev.id = id;
 		device_initialize(&pa->pdev.dev);
 		pa->pdev.dev.release = platform_device_release;
-
-		/* prevent hotplug "modprobe $(MODALIAS)" from causing trouble in
-		 * legacy probe-the-hardware drivers, which don't properly split
-		 * out device enumeration logic from drivers.
-		 */
-		pa->pdev.dev.uevent_suppress = 1;
 	}
 
 	return pa ? &pa->pdev : NULL;
@@ -530,7 +519,7 @@ static ssize_t
 modalias_show(struct device *dev, struct device_attribute *a, char *buf)
 {
 	struct platform_device	*pdev = to_platform_device(dev);
-	int len = snprintf(buf, PAGE_SIZE, "%s\n", pdev->name);
+	int len = snprintf(buf, PAGE_SIZE, "platform:%s\n", pdev->name);
 
 	return (len >= PAGE_SIZE) ? (PAGE_SIZE - 1) : len;
 }
@@ -546,7 +535,7 @@ static int platform_uevent(struct device *dev, char **envp, int num_envp,
 	struct platform_device	*pdev = to_platform_device(dev);
 
 	envp[0] = buffer;
-	snprintf(buffer, buffer_size, "MODALIAS=%s", pdev->name);
+	snprintf(buffer, buffer_size, "MODALIAS=platform:%s", pdev->name);
 	return 0;
 }
 

drivers/input/misc/pcspkr.c

@@ -23,6 +23,7 @@
 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
 MODULE_DESCRIPTION("PC Speaker beeper driver");
 MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:pcspkr");
 
 #ifdef CONFIG_X86
 /* Use the global PIT lock ! */

drivers/pcmcia/pxa2xx_mainstone.c

@@ -175,7 +175,6 @@ static int __init mst_pcmcia_init(void)
 	if (!mst_pcmcia_device)
 		return -ENOMEM;
 
-	mst_pcmcia_device->dev.uevent_suppress = 0;
 	mst_pcmcia_device->dev.platform_data = &mst_pcmcia_ops;
 
 	ret = platform_device_add(mst_pcmcia_device);
@@ -195,3 +194,4 @@ fs_initcall(mst_pcmcia_init);
 module_exit(mst_pcmcia_exit);
 
 MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:pxa2xx-pcmcia");

drivers/pcmcia/pxa2xx_sharpsl.c

@@ -261,7 +261,6 @@ static int __init sharpsl_pcmcia_init(void)
 	if (!sharpsl_pcmcia_device)
 		return -ENOMEM;
 
-	sharpsl_pcmcia_device->dev.uevent_suppress = 0;
 	sharpsl_pcmcia_device->dev.platform_data = &sharpsl_pcmcia_ops;
 	sharpsl_pcmcia_device->dev.parent = platform_scoop_config->devs[0].dev;
 
@@ -284,3 +283,4 @@ module_exit(sharpsl_pcmcia_exit);
 
 MODULE_DESCRIPTION("Sharp SL Series PCMCIA Support");
 MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:pxa2xx-pcmcia");