Upgrade to 4.4.50-rt62

[kvmfornfv.git] / kernel / drivers / pwm / sysfs.c

diff --git a/kernel/drivers/pwm/sysfs.c b/kernel/drivers/pwm/sysfs.c
index 9c90886..375008e 100644 (file)
--- a/kernel/drivers/pwm/sysfs.c
+++ b/kernel/drivers/pwm/sysfs.c
@@ -350,6 +350,26 @@ void pwmchip_sysfs_unexport(struct pwm_chip *chip)
        }
 }
 
+void pwmchip_sysfs_unexport_children(struct pwm_chip *chip)
+{
+       struct device *parent;
+       unsigned int i;
+
+       parent = class_find_device(&pwm_class, NULL, chip,
+                                  pwmchip_sysfs_match);
+       if (!parent)
+               return;
+
+       for (i = 0; i < chip->npwm; i++) {
+               struct pwm_device *pwm = &chip->pwms[i];
+
+               if (test_bit(PWMF_EXPORTED, &pwm->flags))
+                       pwm_unexport_child(parent, pwm);
+       }
+
+       put_device(parent);
+}
+
 static int __init pwm_sysfs_init(void)
 {
        return class_register(&pwm_class);