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clk: sunxi: improve mux_clk error handling and reporting 

We now catch and report a failing ioremap, also a failure in the final
step of the clock registration is now handled and reported.
Also warnings are turned into errors.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
This commit is contained in:
Andre Przywara 2016-02-16 10:46:06 +00:00 committed by Maxime Ripard
parent 33f60d0260
commit 72360b9116
1 changed files with 15 additions and 6 deletions
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21
drivers/clk/sunxi/clk-sunxi.c
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@ -674,11 +674,16 @@ static struct clk * __init sunxi_mux_clk_setup(struct device_node *node,
int i;
reg = of_iomap(node, 0);
if (!reg) {
pr_err("Could not map registers for mux-clk: %s\n",
of_node_full_name(node));
return NULL;
}
i = of_clk_parent_fill(node, parents, SUNXI_MAX_PARENTS);
if (of_property_read_string(node, "clock-output-names", &clk_name)) {
pr_warn("%s: could not read clock-output-names for \"%s\"\n",
__func__, clk_name);
pr_err("%s: could not read clock-output-names from \"%s\"\n",
__func__, of_node_full_name(node));
goto out_unmap;
}
@ -688,15 +693,19 @@ static struct clk * __init sunxi_mux_clk_setup(struct device_node *node,
0, &clk_lock);
if (IS_ERR(clk)) {
pr_warn("%s: failed to register mux clock %s: %ld\n", __func__,
clk_name, PTR_ERR(clk));
pr_err("%s: failed to register mux clock %s: %ld\n", __func__,
clk_name, PTR_ERR(clk));
goto out_unmap;
}
of_clk_add_provider(node, of_clk_src_simple_get, clk);
if (of_clk_add_provider(node, of_clk_src_simple_get, clk)) {
pr_err("%s: failed to add clock provider for %s\n",
__func__, clk_name);
clk_unregister_divider(clk);
goto out_unmap;
}
return clk;
out_unmap:
iounmap(reg);
return NULL;