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platform: prefix MODALIAS with "platform:"

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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>
This commit is contained in:
Kay Sievers 2007-08-18 04:40:39 +02:00 • committed by Greg Kroah-Hartman
commit 43cc71eed1
4 changed files with 5 additions and 15 deletions
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15
drivers/base/platform.c
View file

@ -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;
}

1
drivers/input/misc/pcspkr.c
View file

@ -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 ! */

2
drivers/pcmcia/pxa2xx_mainstone.c
View file

@ -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");

2
drivers/pcmcia/pxa2xx_sharpsl.c
View file

@ -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");