[PATCH v2 3/6] clk: mediatek: mt7622: fix memory leak on module removal

[Akari Tsuyukusa]

clk-mt7622-apmixedsys.c and clk-mt7622-infracfg.c do not call
platform_set_drvdata() during their driver probe callback,
but their remove callback calls platform_get_drvdata().
This results in platform_get_drvdata() returning NULL,
which leads to calling kfree(NULL) in mtk_free_clk_data(NULL).
This leaves clk_data unreleased, causing a memory leak.

Fix this by calling platform_set_drvdata() during probe.

Fixes: c50e2ea6507b ("clk: mediatek: mt7622-apmixedsys: Add .remove() callback for module build")
Fixes: 838b86331c5e ("clk: mediatek: mt7622: Move infracfg to clk-mt7622-infracfg.c")
Cc: stable at vger.kernel.org
Signed-off-by: Akari Tsuyukusa <akkun11.open at gmail.com>
---
 drivers/clk/mediatek/clk-mt7622-apmixedsys.c | 2 ++
 drivers/clk/mediatek/clk-mt7622-infracfg.c   | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/drivers/clk/mediatek/clk-mt7622-apmixedsys.c b/drivers/clk/mediatek/clk-mt7622-apmixedsys.c
index 8a29eaab0cfc..fae8abda14b3 100644
--- a/drivers/clk/mediatek/clk-mt7622-apmixedsys.c
+++ b/drivers/clk/mediatek/clk-mt7622-apmixedsys.c
@@ -109,6 +109,8 @@ static int clk_mt7622_apmixed_probe(struct platform_device *pdev)
 	if (ret)
 		goto unregister_gates;
 
+	platform_set_drvdata(pdev, clk_data);
+
 	return 0;
 
 unregister_gates:
diff --git a/drivers/clk/mediatek/clk-mt7622-infracfg.c b/drivers/clk/mediatek/clk-mt7622-infracfg.c
index cfdf3b07c3e0..cec19447d637 100644
--- a/drivers/clk/mediatek/clk-mt7622-infracfg.c
+++ b/drivers/clk/mediatek/clk-mt7622-infracfg.c
@@ -90,6 +90,8 @@ static int clk_mt7622_infracfg_probe(struct platform_device *pdev)
 	if (ret)
 		goto unregister_cpumuxes;
 
+	platform_set_drvdata(pdev, clk_data);
+
 	return 0;
 
 unregister_cpumuxes:
-- 
2.54.0