From c9843ebbb83a120094aa3a55bc0190d285e8384a Mon Sep 17 00:00:00 2001 From: Mika Westerberg Date: Tue, 6 Jun 2017 15:24:59 +0300 Subject: [PATCH] thunderbolt: Allow passing NULL to tb_ctl_free() Following the usual pattern used in many places, we allow passing NULL pointer to tb_ctl_free(). Then the user can call the function regardless if it has allocated control channel or not making the code bit simpler. Suggested-by: Andy Shevchenko Signed-off-by: Mika Westerberg Signed-off-by: Andreas Noever Signed-off-by: Greg Kroah-Hartman --- drivers/thunderbolt/ctl.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/thunderbolt/ctl.c b/drivers/thunderbolt/ctl.c index 889a32dd21e7..f8290a577b2b 100644 --- a/drivers/thunderbolt/ctl.c +++ b/drivers/thunderbolt/ctl.c @@ -520,6 +520,10 @@ struct tb_ctl *tb_ctl_alloc(struct tb_nhi *nhi, hotplug_cb cb, void *cb_data) void tb_ctl_free(struct tb_ctl *ctl) { int i; + + if (!ctl) + return; + if (ctl->rx) ring_free(ctl->rx); if (ctl->tx)