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authorDaniel Thompson <daniel.thompson@linaro.org>2015-06-10 23:04:54 +0300
committerStephen Boyd <sboyd@codeaurora.org>2015-06-11 00:19:43 +0300
commit3037e9ea780027d41baaaabb68a749e49e7c8260 (patch)
tree84af70ca39344f3446e196ff0bd0929e9481eaa7 /drivers/clk/clk-fixed-factor.c
parentb41c7bfa27f221a567e33b44aa5395adfe042229 (diff)
downloadlinux-3037e9ea780027d41baaaabb68a749e49e7c8260.tar.xz
clk: fixed: Add comment to clk_fixed_set_rate
Currently it is not made explicit why clk_fixed_set_rate() can ignore its arguments and unconditionally return success. Add a comment to explain this. We also mark the clk_ops table const since it should never be modified at runtime. Suggested-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Diffstat (limited to 'drivers/clk/clk-fixed-factor.c')
-rw-r--r--drivers/clk/clk-fixed-factor.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/clk/clk-fixed-factor.c b/drivers/clk/clk-fixed-factor.c
index e186db263d5e..fccabe497f6e 100644
--- a/drivers/clk/clk-fixed-factor.c
+++ b/drivers/clk/clk-fixed-factor.c
@@ -55,10 +55,16 @@ static long clk_factor_round_rate(struct clk_hw *hw, unsigned long rate,
static int clk_factor_set_rate(struct clk_hw *hw, unsigned long rate,
unsigned long parent_rate)
{
+ /*
+ * We must report success but we can do so unconditionally because
+ * clk_factor_round_rate returns values that ensure this call is a
+ * nop.
+ */
+
return 0;
}
-struct clk_ops clk_fixed_factor_ops = {
+const struct clk_ops clk_fixed_factor_ops = {
.round_rate = clk_factor_round_rate,
.set_rate = clk_factor_set_rate,
.recalc_rate = clk_factor_recalc_rate,