clk: Fix pointer casting to prevent oops in devm_clk_release()

commit c643c44d2f44392a6d5f7b9254ab7872792431f5 upstream.

The release function is called with a pointer to the memory returned by
devres_alloc(). I was confused about that by the code before the
generalization that used a struct clk **ptr.

Reported-by: Marek Szyprowski <m.szyprowski@samsung.com>
Fixes: 195372203b9a ("clk: generalize devm_clk_get() a bit")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20220620171815.114212-1-u.kleine-koenig@pengutronix.de
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Tested-by: Linux Kernel Functional Testing <lkft@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/clk/clk-devres.c b/drivers/clk/clk-devres.c
index 43ccd20e02988080e4c10d1bcc6f4297914f25dd..4fb4fd4b06bdade6729ef0f15f861bc0cd262930 100644 (file)
--- a/drivers/clk/clk-devres.c
+++ b/drivers/clk/clk-devres.c
@@ -11,7 +11,7 @@ struct devm_clk_state {
 
 static void devm_clk_release(struct device *dev, void *res)
 {
-       struct devm_clk_state *state = *(struct devm_clk_state **)res;
+       struct devm_clk_state *state = res;
 
        if (state->exit)
                state->exit(state->clk);