Automatic clock disabling on clk_put()
From: Russell King - ARM Linux <hidden>
Date: 2015-05-13 20:12:46
Also in:
linux-clk, lkml
From: Russell King - ARM Linux <hidden>
Date: 2015-05-13 20:12:46
Also in:
linux-clk, lkml
On Wed, May 13, 2015 at 12:45:12PM -0700, Stephen Boyd wrote:
On 05/12/15 23:45, Uwe Kleine-K?nig wrote:quoted
quoted
that hard to call clk_disable_unprepare() on a clock at the end of an error path? Maybe you could add a devm_clk_get_prepare_enable() that does what you want and then call clk_disable_unprepare on the exit path?You mean clk_disable_unprepare is called in the same function that calls clk_put I assume such that you don't have to do anything in the exit path.Yes that's what I mean.
In terms of stopping people doing: clk = clk_get(...); clk_prepare_enable(clk); clk_put(clk); I think this is a good thing, because it ensures that people can't do this anymore. I think you need to audit the code properly first, and fix any instances of that _before_ posting patches with your idea - let's try to avoid as much as possible any breakage resulting from this. -- FTTC broadband for 0.8mile line: currently at 10.5Mbps down 400kbps up according to speedtest.net.