Re: [PATCH V2] clk: socfpga: err out if of_clk_add_provider() failed in __socfpga_pll_init()
From: Stephen Boyd <sboyd@kernel.org>
Date: 2021-06-09 21:57:16
Also in:
lkml
Quoting Yu Kuai (2021-06-02 01:42:59)
__socfpga_pll_init() should fail if of_clk_add_provider() failed. remove 'rc' in the meantime to avoid gcc '-Wunused-but-set-variable' warning. Signed-off-by: Yu Kuai <redacted> ---
Please don't send as in-reply-to previous patches. Makes it hard for me to find them on the list.
quoted hunk ↗ jump to hunk
changes in V2: - remove 'rc' and use err' instead of 'rc' - err out if of_clk_add_provider() failed drivers/clk/socfpga/clk-pll.c | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-)diff --git a/drivers/clk/socfpga/clk-pll.c b/drivers/clk/socfpga/clk-pll.c index dcb573d44034..5a9eec2eca80 100644 --- a/drivers/clk/socfpga/clk-pll.c +++ b/drivers/clk/socfpga/clk-pll.c@@ -80,7 +80,6 @@ static __init struct clk_hw *__socfpga_pll_init(struct device_node *node, const char *parent_name[SOCFPGA_MAX_PARENTS]; struct clk_init_data init; struct device_node *clkmgr_np; - int rc; int err; of_property_read_u32(node, "reg", ®);@@ -110,12 +109,16 @@ static __init struct clk_hw *__socfpga_pll_init(struct device_node *node, hw_clk = &pll_clk->hw.hw; err = clk_hw_register(NULL, hw_clk); - if (err) { - kfree(pll_clk); - return ERR_PTR(err); - } - rc = of_clk_add_provider(node, of_clk_src_simple_get, hw_clk); + if (err) + goto err_out; + err = of_clk_add_provider(node, of_clk_src_simple_get, hw_clk); + if (err)
Now we don't unregister the clk on failure? Can you use of_clk_add_hw_provider() as well? That would make this more modern. It can be done as a followup patch to this one.
+ goto err_out;
return hw_clk;
+
+err_out:
+ kfree(pll_clk);
+ return ERR_PTR(err);
}