On Fri, Nov 11, 2016 at 11:28:52AM -0800, Tony Lindgren wrote:
> If we return early on pm_runtime_get() error, we need to also call
> pm_runtime_put_noidle() as pointed out in a musb related thread
> by Johan Hovold <jo...@kernel.org>. This is to keep the PM runtime
> use counts happy.
>
> Fixes: fdea2d09b997 ("dmaengine: cppi41: Add basic PM runtime support")
> Cc: Johan Hovold <jo...@kernel.org>
> Signed-off-by: Tony Lindgren <t...@atomide.com>
> ---
> drivers/dma/cppi41.c | 11 +++++++++--
> 1 file changed, 9 insertions(+), 2 deletions(-)
> @@ -466,6 +472,7 @@ static void cppi41_dma_issue_pending(struct dma_chan
> *chan)
>
> error = pm_runtime_get(cdd->ddev.dev);
> if ((error != -EINPROGRESS) && error < 0) {
> + pm_runtime_put_noidle(cdd->ddev.dev);
> dev_err(cdd->ddev.dev, "Failed to pm_runtime_get: %i\n",
> error);
Will this chunk not introduce rather than fix an imbalance, though? An
error is never returned above, and the corresponding put is done
unconditionally as far as I can tell.
Johan
--
To unsubscribe from this list: send the line "unsubscribe linux-usb" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
