Applied "ASoC: topology: Fix memleak in soc_tplg_link_elems_load()" to the asoc tree

[Mark Brown]

The patch

   ASoC: topology: Fix memleak in soc_tplg_link_elems_load()

has been applied to the asoc tree at

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git 

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.  

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

>From 2b2d5c4db732c027a14987cfccf767dac1b45170 Mon Sep 17 00:00:00 2001
From: Dragos Tarcatu <dragos_tarcatu at mentor.com>
Date: Fri, 7 Feb 2020 20:53:24 +0200
Subject: [PATCH] ASoC: topology: Fix memleak in soc_tplg_link_elems_load()

If soc_tplg_link_config() fails, _link needs to be freed in case of
topology ABI version mismatch. However the current code is returning
directly and ends up leaking memory in this case.
This patch fixes that.

Fixes: 593d9e52f9bb ("ASoC: topology: Add support to configure existing physical DAI links")
Signed-off-by: Dragos Tarcatu <dragos_tarcatu at mentor.com>
Link: https://lore.kernel.org/r/20200207185325.22320-2-dragos_tarcatu@mentor.com
Signed-off-by: Mark Brown <broonie at kernel.org>
---
 sound/soc/soc-topology.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/sound/soc/soc-topology.c b/sound/soc/soc-topology.c
index 107ba3ed5440..953517a73298 100644
--- a/sound/soc/soc-topology.c
+++ b/sound/soc/soc-topology.c
@@ -2376,8 +2376,11 @@ static int soc_tplg_link_elems_load(struct soc_tplg *tplg,
 		}
 
 		ret = soc_tplg_link_config(tplg, _link);
-		if (ret < 0)
+		if (ret < 0) {
+			if (!abi_match)
+				kfree(_link);
 			return ret;
+		}
 
 		/* offset by version-specific struct size and
 		 * real priv data size
-- 
2.20.1