linux-kernel - Re: [PATCH 2/2] regulator: core: Check that the selector from map

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Date:	Tue, 26 Jun 2012 20:40:42 +0800
From:	Axel Lin <axel.lin@...il.com>
To:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
Cc:	Liam Girdwood <lrg@...com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] regulator: core: Check that the selector from
 map_voltage() is valid

2012/6/26 Mark Brown <broonie@...nsource.wolfsonmicro.com>:
> Lots of regulator drivers have checks in their map_voltage() functions
> to verify that the result of the mapping is in the range originally
> specified. Factor these out in the core and provide a bit of extra
> defensiveness for other drivers by doing the check in the core.
>
> Since we're now doing a list_voltage() earlier move the current mapping
> back to a voltage out into the set_voltage() call to save redoing it.
>
> Signed-off-by: Mark Brown <broonie@...nsource.wolfsonmicro.com>
Hi Mark,
This patch does not apply to both linux-next tree and regulator tree
(for-next branch).

I got below diff in drivers/regulator/core.c.rej.

--- drivers/regulator/core.c
+++ drivers/regulator/core.c
@@ -2119,10 +2128,8 @@
 		}

 		if (ret >= 0) {
-			if (min_uV < rdev->desc->ops->list_voltage(rdev,
-								   ret) &&
-			    max_uV > rdev->desc->ops->list_voltage(rdev,
-								   ret)) {
+			best_val = rdev->desc->ops->list_voltage(rdev, ret);
+			if (min_uV <= best_val && max_uV >= best_val) {
 				selector = ret;
 				ret = rdev->desc->ops->set_voltage_sel(rdev,
 								       ret);

Regards,
Axel
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