[PATCH 01/75] platform: prefix MODALIAS with "platform:"

Greg Kroah-Hartman
2007-10-12T22:17:50Z

From: Kay Sievers <kay.sievers@vrfy.org>

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 | 15 ++-------------
drivers/input/misc/pcspkr.c | 1 +
drivers/pcmcia/pxa2xx_mainstone.c | 2 +-
drivers/pcmcia/pxa2xx_sharpsl.c | 2 +-
4 files changed, 5 insertions(+), 15 deletions(-)

diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index 869ff8c..9bfc434 100644
--- a/drivers/base/platform.c
+++ b/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;
}

diff --git a/drivers/input/misc/pcspkr.c b/drivers/input/misc/pcspkr.c
index 906bf5e..e1a4402 100644
--- a/drivers/input/misc/pcspkr.c
+++ b/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 ! */
diff --git a/drivers/pcmcia/pxa2xx_mainstone.c b/drivers/pcmcia/pxa2xx_mainstone.c
index 383107b..f6722ba 100644
--- a/drivers/pcmcia/pxa2xx_mainstone.c
+++ b/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");
diff --git a/drivers/pcmcia/pxa2xx_sharpsl.c b/drivers/pcmcia/pxa2xx_sharpsl.c
index a2daa3f..d5c33bd 100644
--- a/drivers/pcmcia/pxa2xx_sharpsl.c
+++ b/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");
--
1.5.3.4