X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;f=drivers%2Fpwm%2Fsysfs.c;h=a813239300c3d46bba1320caac77ec7adc8363a8;hb=a5c3b32a1146e44f6b38fdfdfffc27842953420c;hp=18ed725594c316ab71edafdafb5e1912714de7f1;hpb=f26e8817b235d8764363bffcc9cbfc61867371f2;p=karo-tx-linux.git

diff --git a/drivers/pwm/sysfs.c b/drivers/pwm/sysfs.c
index 18ed725594c3..a813239300c3 100644
--- a/drivers/pwm/sysfs.c
+++ b/drivers/pwm/sysfs.c
@@ -409,6 +409,26 @@ 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);