[ibm-acpi-devel] [PATCH] platform/x86: thinkpad_acpi: Fix a memory leak of EFCH MMIO resource

[Jean D. <jde...@su...>]

Unlike release_mem_region(), a call to release_resource() does not
free the resource, so it has to be freed explicitly to avoid a memory
leak.

Signed-off-by: Jean Delvare <jde...@su...>
Fixes: 455cd867b85b ("platform/x86: thinkpad_acpi: Add a s2idle resume quirk for a number of laptops")
Cc: Mario Limonciello <mar...@am...>
Cc: Henrique de Moraes Holschuh <hm...@hm...>
Cc: Hans de Goede <hde...@re...>
Cc: Mark Gross <mar...@ke...>
---
 drivers/platform/x86/thinkpad_acpi.c |    1 +
 1 file changed, 1 insertion(+)

--- linux-5.18.orig/drivers/platform/x86/thinkpad_acpi.c	2022-05-22 21:52:31.000000000 +0200
+++ linux-5.18/drivers/platform/x86/thinkpad_acpi.c	2022-06-21 15:49:31.705166709 +0200
@@ -4529,6 +4529,7 @@ static void thinkpad_acpi_amd_s2idle_res
 	iounmap(addr);
 cleanup_resource:
 	release_resource(res);
+	kfree(res);
 }
 
 static struct acpi_s2idle_dev_ops thinkpad_acpi_s2idle_dev_ops = {


-- 
Jean Delvare
SUSE L3 Support