From: Dario Binacchi Date: Sun, 13 Nov 2022 18:11:47 +0000 (+0100) Subject: clk: ti: dra7-atl: don't allocate `parent_names' variable X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=6e49aacaaf4a1380ba4d3cb4a22923193f5fdf40;p=linux.git clk: ti: dra7-atl: don't allocate `parent_names' variable The `parent_names' variable was freed also in case of kzalloc() error. Instead of modifying the code to perform a proper memory release, I decided to fix the bug by not allocating memory. Since only one parent name is referenced, it is not necessary to allocate this variable at runtime and therefore you can avoid calling the kzalloc() function. This simplifies the code (even calls to kfree can be removed) and improves the performance of the routine. Signed-off-by: Dario Binacchi Reported-by: kernel test robot Link: https://lore.kernel.org/r/20221113181147.1626585-2-dario.binacchi@amarulasolutions.com Tested-by: Tony Lindgren Reviewed-by: Tony Lindgren Signed-off-by: Stephen Boyd --- diff --git a/drivers/clk/ti/clk-dra7-atl.c b/drivers/clk/ti/clk-dra7-atl.c index 1c576599f6dbd..d964e3affd42c 100644 --- a/drivers/clk/ti/clk-dra7-atl.c +++ b/drivers/clk/ti/clk-dra7-atl.c @@ -163,8 +163,8 @@ static const struct clk_ops atl_clk_ops = { static void __init of_dra7_atl_clock_setup(struct device_node *node) { struct dra7_atl_desc *clk_hw = NULL; + struct clk_parent_data pdata = { .index = 0 }; struct clk_init_data init = { NULL }; - const char **parent_names = NULL; const char *name; struct clk *clk; @@ -188,24 +188,14 @@ static void __init of_dra7_atl_clock_setup(struct device_node *node) goto cleanup; } - parent_names = kzalloc(sizeof(char *), GFP_KERNEL); - - if (!parent_names) - goto cleanup; - - parent_names[0] = of_clk_get_parent_name(node, 0); - - init.parent_names = parent_names; - + init.parent_data = &pdata; clk = of_ti_clk_register(node, &clk_hw->hw, name); if (!IS_ERR(clk)) { of_clk_add_provider(node, of_clk_src_simple_get, clk); - kfree(parent_names); return; } cleanup: - kfree(parent_names); kfree(clk_hw); } CLK_OF_DECLARE(dra7_atl_clock, "ti,dra7-atl-clock", of_dra7_atl_clock_setup);