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>
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 @@
*
* 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 @@
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 @@
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 @@
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;
}