1 files changed, 18 insertions, 0 deletions

diff --git a/drivers/pwm/sysfs.c b/drivers/pwm/sysfs.c
index 18ed725594c3..0296d8178ae2 100644
--- a/drivers/pwm/sysfs.c
+++ b/drivers/pwm/sysfs.c
@@ -409,6 +409,24 @@ 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);
+        }
+}
+
 static int __init pwm_sysfs_init(void)
 {
         return class_register(&pwm_class);