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authorHelge Deller <deller@gmx.de>2008-12-25 20:04:00 +0000
committerKyle McMartin <kyle@mcmartin.ca>2009-01-05 19:11:59 +0000
commit7246c31e45021bc68688c4a8fd2bbb70b485d1ef (patch)
treebaaa5913bec7d3a36b02861f67e1cdde66815005 /arch/parisc/kernel/drivers.c
parent5fbf6635a951a75870be9874580c55da538fb025 (diff)
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parisc: add uevent helper for parisc bus
parisc: add uevent helper for parisc bus udev device-driver auto detection was failing to work on the GSC bus, since udev didn't knew wich driver to load due to a missing MODALIAS environment variable from kernel. This patch fixes this by adding the MODALIAS environment variable to the uevent kernel notifications. Since modalias_show() generated the modalias string already, I splitted this out and created a new static function make_modalias() which is now used by modalias_show() and the new parisc_uevent() function. Tested on 715/64 and c3000. Signed-off-by: Helge Deller <deller@gmx.de> Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
Diffstat (limited to 'arch/parisc/kernel/drivers.c')
-rw-r--r--arch/parisc/kernel/drivers.c40
1 files changed, 34 insertions, 6 deletions
diff --git a/arch/parisc/kernel/drivers.c b/arch/parisc/kernel/drivers.c
index 884b7ce16a3b..994bcd980909 100644
--- a/arch/parisc/kernel/drivers.c
+++ b/arch/parisc/kernel/drivers.c
@@ -549,6 +549,38 @@ static int parisc_generic_match(struct device *dev, struct device_driver *drv)
return match_device(to_parisc_driver(drv), to_parisc_device(dev));
}
+static ssize_t make_modalias(struct device *dev, char *buf)
+{
+ const struct parisc_device *padev = to_parisc_device(dev);
+ const struct parisc_device_id *id = &padev->id;
+
+ return sprintf(buf, "parisc:t%02Xhv%04Xrev%02Xsv%08X\n",
+ (u8)id->hw_type, (u16)id->hversion, (u8)id->hversion_rev,
+ (u32)id->sversion);
+}
+
+static int parisc_uevent(struct device *dev, struct kobj_uevent_env *env)
+{
+ const struct parisc_device *padev;
+ char modalias[40];
+
+ if (!dev)
+ return -ENODEV;
+
+ padev = to_parisc_device(dev);
+ if (!padev)
+ return -ENODEV;
+
+ if (add_uevent_var(env, "PARISC_NAME=%s", padev->name))
+ return -ENOMEM;
+
+ make_modalias(dev, modalias);
+ if (add_uevent_var(env, "MODALIAS=%s", modalias))
+ return -ENOMEM;
+
+ return 0;
+}
+
#define pa_dev_attr(name, field, format_string) \
static ssize_t name##_show(struct device *dev, struct device_attribute *attr, char *buf) \
{ \
@@ -566,12 +598,7 @@ pa_dev_attr_id(sversion, "0x%05x\n");
static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf)
{
- struct parisc_device *padev = to_parisc_device(dev);
- struct parisc_device_id *id = &padev->id;
-
- return sprintf(buf, "parisc:t%02Xhv%04Xrev%02Xsv%08X\n",
- (u8)id->hw_type, (u16)id->hversion, (u8)id->hversion_rev,
- (u32)id->sversion);
+ return make_modalias(dev, buf);
}
static struct device_attribute parisc_device_attrs[] = {
@@ -587,6 +614,7 @@ static struct device_attribute parisc_device_attrs[] = {
struct bus_type parisc_bus_type = {
.name = "parisc",
.match = parisc_generic_match,
+ .uevent = parisc_uevent,
.dev_attrs = parisc_device_attrs,
.probe = parisc_driver_probe,
.remove = parisc_driver_remove,