From d03760318edbc78b72cb7fa96bddb65263384d24 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Tue, 31 May 2011 13:30:10 +0100 Subject: [PATCH] wm831x_backup: Support multiple instances If there are multiple wm831x devices in the system we need to assign different names to the power supply devices in order to ensure we can create the sysfs entries for them. Signed-off-by: Mark Brown Signed-off-by: Anton Vorontsov --- drivers/power/wm831x_backup.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/power/wm831x_backup.c b/drivers/power/wm831x_backup.c index 0fd130d..e648cbe 100644 --- a/drivers/power/wm831x_backup.c +++ b/drivers/power/wm831x_backup.c @@ -22,6 +22,7 @@ struct wm831x_backup { struct wm831x *wm831x; struct power_supply backup; + char name[20]; }; static int wm831x_backup_read_voltage(struct wm831x *wm831x, @@ -163,6 +164,7 @@ static enum power_supply_property wm831x_backup_props[] = { static __devinit int wm831x_backup_probe(struct platform_device *pdev) { struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent); + struct wm831x_pdata *wm831x_pdata = wm831x->dev->platform_data; struct wm831x_backup *devdata; struct power_supply *backup; int ret; @@ -182,7 +184,14 @@ static __devinit int wm831x_backup_probe(struct platform_device *pdev) */ wm831x_config_backup(wm831x); - backup->name = "wm831x-backup"; + if (wm831x_pdata && wm831x_pdata->wm831x_num) + snprintf(devdata->name, sizeof(devdata->name), + "wm831x-backup.%d", wm831x_pdata->wm831x_num); + else + snprintf(devdata->name, sizeof(devdata->name), + "wm831x-backup"); + + backup->name = devdata->name; backup->type = POWER_SUPPLY_TYPE_BATTERY; backup->properties = wm831x_backup_props; backup->num_properties = ARRAY_SIZE(wm831x_backup_props); @@ -203,6 +212,7 @@ static __devexit int wm831x_backup_remove(struct platform_device *pdev) struct wm831x_backup *devdata = platform_get_drvdata(pdev); power_supply_unregister(&devdata->backup); + kfree(devdata->backup.name); kfree(devdata); return 0; -- 2.7.4