Re: [PATCH 1/2] clk: cache parent clocks only for muxes

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On Wednesday 13 June 2012 12:34 AM, Mike Turquette wrote:
On 20120606-11:47, Russell King - ARM Linux wrote:
On Wed, Jun 06, 2012 at 02:41:30PM +0530, Rajendra Nayak wrote:
caching parent clocks makes sense only when a clock has more
than one parent (mux clocks).
Avoid doing this for every other clock.

Signed-off-by: Rajendra Nayak<rnayak@xxxxxx>
  drivers/clk/clk.c |    2 +-
  1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
index 687b00d..40568e9 100644
--- a/drivers/clk/clk.c
+++ b/drivers/clk/clk.c
@@ -1229,7 +1229,7 @@ int __clk_init(struct device *dev, struct clk *clk)
  	 * If clk->parents is not NULL we skip this entire block.  This allows
  	 * for clock drivers to statically initialize clk->parents.
-	if (clk->num_parents&&  !clk->parents) {
+	if ((clk->num_parents>  1)&&  !clk->parents) {

You don't need the additional parens here.  Please learn the C precedence
rules.  Additional unnecessary parens can make expressions much harder
to read.


I've taken this patch into clk-next for testing.  I've fixed up the
extra parens locally, so no need for a resend.

Thanks Mike.


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