From: Miaoqian Lin <linmq006@gmail.com>
Date: Fri, 6 Jan 2023 05:40:22 +0000 (+0400)
Subject: soc: ti: pm33xx: Fix refcount leak in am33xx_pm_probe
X-Git-Tag: v6.2.15~523
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e6c6b40c9bf49ce9b5493b146bfeb96359937cfa;p=thirdparty%2Fkernel%2Fstable.git

soc: ti: pm33xx: Fix refcount leak in am33xx_pm_probe

[ Upstream commit 8f3c307b580a4a6425896007325bddefc36e8d91 ]

wkup_m3_ipc_get() takes refcount, which should be freed by
wkup_m3_ipc_put(). Add missing refcount release in the error paths.

Fixes: 5a99ae0092fe ("soc: ti: pm33xx: AM437X: Add rtc_only with ddr in self-refresh support")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Link: https://lore.kernel.org/r/20230106054022.947529-1-linmq006@gmail.com
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/drivers/soc/ti/pm33xx.c b/drivers/soc/ti/pm33xx.c
index ce09c42eaed25..f04c21157904b 100644
--- a/drivers/soc/ti/pm33xx.c
+++ b/drivers/soc/ti/pm33xx.c
@@ -527,7 +527,7 @@ static int am33xx_pm_probe(struct platform_device *pdev)
 
 	ret = am33xx_pm_alloc_sram();
 	if (ret)
-		return ret;
+		goto err_wkup_m3_ipc_put;
 
 	ret = am33xx_pm_rtc_setup();
 	if (ret)
@@ -572,13 +572,14 @@ err_pm_runtime_put:
 	pm_runtime_put_sync(dev);
 err_pm_runtime_disable:
 	pm_runtime_disable(dev);
-	wkup_m3_ipc_put(m3_ipc);
 err_unsetup_rtc:
 	iounmap(rtc_base_virt);
 	clk_put(rtc_fck);
 err_free_sram:
 	am33xx_pm_free_sram();
 	pm33xx_dev = NULL;
+err_wkup_m3_ipc_put:
+	wkup_m3_ipc_put(m3_ipc);
 	return ret;
 }