> -----Original Message----- > From: Olaf Hering [mailto:[email protected]] > Sent: Friday, September 02, 2011 12:26 PM > To: KY Srinivasan > Cc: [email protected]; [email protected]; > [email protected]; [email protected] > Subject: [PATCH] Staging: hv: vmbus: Show the modalias in > /sys/bus/vmbus/devices/*/ > > Show a modalias file in /sys/bus/vmbus/devices/*/ > Add a helper function to print the same content in modalias and uevent. > > Signed-off-by: Olaf Hering <[email protected]> > > --- > drivers/staging/hv/vmbus_drv.c | 21 ++++++++++++++++----- > 1 file changed, 16 insertions(+), 5 deletions(-) > > --- a/drivers/staging/hv/vmbus_drv.c > +++ b/drivers/staging/hv/vmbus_drv.c > @@ -93,6 +93,14 @@ static void get_channel_info(struct hv_d > debug_info.outbound.bytes_avail_towrite; > } > > +#define VMBUS_ALIAS_LEN ((sizeof((struct hv_vmbus_device_id *)0)->guid) * > 2) > +static void print_alias_name(struct hv_device *hv_dev, char *alias_name) > +{ > + int i; > + for (i = 0; i < VMBUS_ALIAS_LEN; i += 2) > + sprintf(&alias_name[i], "%02x", hv_dev->dev_type.b[i/2]); > +} > + > /* > * vmbus_show_device_attr - Show the device attribute in sysfs. > * > @@ -105,6 +113,7 @@ static ssize_t vmbus_show_device_attr(st > { > struct hv_device *hv_dev = device_to_hv_device(dev); > struct hv_device_info device_info; > + char alias_name[VMBUS_ALIAS_LEN + 1]; > > memset(&device_info, 0, sizeof(struct hv_device_info)); > > @@ -148,6 +157,9 @@ static ssize_t vmbus_show_device_attr(st > device_info.chn_instance.b[13], > device_info.chn_instance.b[14], > device_info.chn_instance.b[15]); > + } else if (!strcmp(dev_attr->attr.name, "modalias")) { > + print_alias_name(hv_dev, alias_name); > + return sprintf(buf, "vmbus:%s\n", alias_name); > } else if (!strcmp(dev_attr->attr.name, "state")) { > return sprintf(buf, "%d\n", device_info.chn_state); > } else if (!strcmp(dev_attr->attr.name, "id")) { > @@ -204,6 +216,7 @@ static struct device_attribute vmbus_dev > __ATTR(class_id, S_IRUGO, vmbus_show_device_attr, NULL), > __ATTR(device_id, S_IRUGO, vmbus_show_device_attr, NULL), > __ATTR(monitor_id, S_IRUGO, vmbus_show_device_attr, NULL), > + __ATTR(modalias, S_IRUGO, vmbus_show_device_attr, NULL), > > __ATTR(server_monitor_pending, S_IRUGO, vmbus_show_device_attr, > NULL), > __ATTR(server_monitor_latency, S_IRUGO, vmbus_show_device_attr, > NULL), > @@ -242,12 +255,10 @@ static struct device_attribute vmbus_dev > static int vmbus_uevent(struct device *device, struct kobj_uevent_env *env) > { > struct hv_device *dev = device_to_hv_device(device); > - int i, ret; > - char alias_name[((sizeof((struct hv_vmbus_device_id *)0)->guid) + 1) * > 2]; > - > - for (i = 0; i < ((sizeof((struct hv_vmbus_device_id *)0)->guid) * 2); i > += 2) > - sprintf(&alias_name[i], "%02x", dev->dev_type.b[i/2]); > + int ret; > + char alias_name[VMBUS_ALIAS_LEN + 1]; > > + print_alias_name(dev, alias_name); > ret = add_uevent_var(env, "MODALIAS=vmbus:%s", alias_name); > return ret; > }
Acked-by: K. Y. Srinivasan <[email protected]> _______________________________________________ devel mailing list [email protected] http://driverdev.linuxdriverproject.org/mailman/listinfo/devel
