| From | Sebastian Hesselbarth <> | Subject | [RFC 01/17] clk: ensure __clk_of_table is only initialized once | Date | Tue, 20 Aug 2013 04:04:15 +0200 |
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This patch ensures DT clock providers are only initialized once by using a static bool that is set after first call to of_clk_init().
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> --- Cc: Mike Turquette <mturquette@linaro.org> Cc: Russell King <linux@arm.linux.org.uk> Cc: Arnd Bergmann <arnd@arndb.de> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org --- drivers/clk/clk.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c index 56a00db..0a8a750 100644 --- a/drivers/clk/clk.c +++ b/drivers/clk/clk.c @@ -2117,9 +2117,15 @@ EXPORT_SYMBOL_GPL(of_clk_get_parent_name); void __init of_clk_init(const struct of_device_id *matches) { struct device_node *np; + static bool table_done; - if (!matches) + if (!matches) { + /* init __clk_of_table drivers only once */ + if (table_done) + return; matches = __clk_of_table; + table_done = true; + } for_each_matching_node(np, matches) { const struct of_device_id *match = of_match_node(matches, np); -- 1.7.10.4
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