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thunderbolt: Notify userspace when boot_acl is changed

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The commit 9aaa3b8b4c ("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: 9aaa3b8b4c ("thunderbolt: Add support for preboot ACL")
Reported-and-tested-by: Christian Kellner <christian@kellner.me>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Christian Kellner <christian@kellner.me>
Acked-by: Yehezkel Bernat <yehezkelshb@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Mika Westerberg 2018-06-26 14:46:35 +03:00 committed by Greg Kroah-Hartman
parent 57c5f4df0a
commit 007a74907d
1 changed files with 4 additions and 0 deletions
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4
drivers/thunderbolt/domain.c
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@ -213,6 +213,10 @@ static ssize_t boot_acl_store(struct device *dev, struct device_attribute *attr,
goto err_free_acl; goto err_free_acl;
} }
ret = tb->cm_ops->set_boot_acl(tb, acl, tb->nboot_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); mutex_unlock(&tb->lock);
err_free_acl: err_free_acl: