From 99a049aace3257cf7644c3bbf67cb1a655248cc2 Mon Sep 17 00:00:00 2001
From: Bryan Brattlof <bb@ti.com>
Date: Wed, 25 May 2022 16:36:17 -0500
Subject: [PATCH] thermal/drivers/k3_j72xx_bandgap: Fix ref_table memory leak
during probe
If an error occurs in the k3_j72xx_bandgap_probe() function the memory
allocated to the 'ref_table' will not be released.
Add a err_free_ref_table step to the error path to free 'ref_table'
Fixes: 72b3fc61c752 ("thermal: k3_j72xx_bandgap: Add the bandgap driver support")
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Bryan Brattlof <bb@ti.com>
Reviewed-by: Keerthy <j-keerthy@ti.com>
Link: https://lore.kernel.org/r/20220525213617.30002-1-bb@ti.com
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
---
drivers/thermal/k3_j72xx_bandgap.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/thermal/k3_j72xx_bandgap.c b/drivers/thermal/k3_j72xx_bandgap.c
index 64e323158952..3a35aa38ff51 100644
--- a/drivers/thermal/k3_j72xx_bandgap.c
+++ b/drivers/thermal/k3_j72xx_bandgap.c
@@ -433,7 +433,7 @@ static int k3_j72xx_bandgap_probe(struct platform_device *pdev)
GFP_KERNEL);
if (!derived_table) {
ret = -ENOMEM;
- goto err_alloc;
+ goto err_free_ref_table;
}
/* Workaround not needed if bit30/bit31 is set even for J721e */
@@ -483,7 +483,7 @@ static int k3_j72xx_bandgap_probe(struct platform_device *pdev)
if (IS_ERR(ti_thermal)) {
dev_err(bgp->dev, "thermal zone device is NULL\n");
ret = PTR_ERR(ti_thermal);
- goto err_alloc;
+ goto err_free_ref_table;
}
}
@@ -514,6 +514,9 @@ static int k3_j72xx_bandgap_probe(struct platform_device *pdev)
return 0;
+err_free_ref_table:
+ kfree(ref_table);
+
err_alloc:
pm_runtime_put_sync(&pdev->dev);
pm_runtime_disable(&pdev->dev);
--
2.30.9