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firewire: Export GUID as sysfs attribute.

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Signed-off-by: Kristian Høgsberg <krh@redhat.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
This commit is contained in:
Kristian Høgsberg
2007-03-20 20:58:35 -04:00
committed by Stefan Richter
parent 7feb9cce2d
commit bbd1494580
1 changed files with 13 additions and 2 deletions
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15
drivers/firewire/fw-device.c
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@@ -348,8 +348,7 @@ static struct device_attribute fw_unit_attributes[] = {
}; };
static ssize_t static ssize_t
config_rom_show(struct device *dev, config_rom_show(struct device *dev, struct device_attribute *attr, char *buf)
struct device_attribute *attr, char *buf)
{ {
struct fw_device *device = fw_device(dev); struct fw_device *device = fw_device(dev);
@@ -358,8 +357,20 @@ config_rom_show(struct device *dev,
return device->config_rom_length * 4; return device->config_rom_length * 4;
} }
static ssize_t
guid_show(struct device *dev, struct device_attribute *attr, char *buf)
{
struct fw_device *device = fw_device(dev);
u64 guid;
guid = ((u64)device->config_rom[3] << 32) | device->config_rom[4];
return snprintf(buf, PAGE_SIZE, "0x%016llx\n", guid);
}
static struct device_attribute fw_device_attributes[] = { static struct device_attribute fw_device_attributes[] = {
__ATTR_RO(config_rom), __ATTR_RO(config_rom),
__ATTR_RO(guid),
__ATTR_NULL, __ATTR_NULL,
}; };