From: Mika Westerberg Date: Tue, 26 Jun 2018 11:46:35 +0000 (+0300) Subject: thunderbolt: Notify userspace when boot_acl is changed X-Git-Tag: v4.18-rc5~23^2~1 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=007a74907deeceefef9dc3ec4679fbd7921eaa51;p=thirdparty%2Flinux.git thunderbolt: Notify userspace when boot_acl is changed The commit 9aaa3b8b4c56 ("thunderbolt: Add support for preboot ACL") introduced boot_acl attribute but missed the fact that now userspace needs to poll the attribute constantly to find out whether it has changed or not. Fix this by sending notification to the userspace whenever the boot_acl attribute is changed. Fixes: 9aaa3b8b4c56 ("thunderbolt: Add support for preboot ACL") Reported-and-tested-by: Christian Kellner Signed-off-by: Mika Westerberg Reviewed-by: Christian Kellner Acked-by: Yehezkel Bernat Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/thunderbolt/domain.c b/drivers/thunderbolt/domain.c index 6281266b8ec0a..a923ebdeb73c8 100644 --- a/drivers/thunderbolt/domain.c +++ b/drivers/thunderbolt/domain.c @@ -213,6 +213,10 @@ static ssize_t boot_acl_store(struct device *dev, struct device_attribute *attr, goto err_free_acl; } ret = tb->cm_ops->set_boot_acl(tb, acl, tb->nboot_acl); + if (!ret) { + /* Notify userspace about the change */ + kobject_uevent(&tb->dev.kobj, KOBJ_CHANGE); + } mutex_unlock(&tb->lock); err_free_acl: