On Tue, Mar 19, 2013 at 03:00:49AM +0000, Ben Hutchings wrote:
> On Thu, 2013-03-14 at 10:35 +0000, Luis Henriques wrote:
> > 3.5.7.8 -stable review patch. If anyone has any objections, please let me know.
> >
> > ------------------
> >
> > From: Mark Brown <broonie@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
> >
> > commit 3e78080f81481aa8340374d5a37ae033c1cf4272 upstream.
> >
> > Not having power is a pretty serious error so check that we are able to
> > enable the supply and error out if we can't.
> >
> > Signed-off-by: Mark Brown <broonie@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
> > Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx>
> > Signed-off-by: Luis Henriques <luis.henriques@xxxxxxxxxxxxx>
> > ---
> > drivers/hwmon/sht15.c | 8 +++++++-
> > 1 file changed, 7 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/hwmon/sht15.c b/drivers/hwmon/sht15.c
> > index 8b011d0..eb01802 100644
> > --- a/drivers/hwmon/sht15.c
> > +++ b/drivers/hwmon/sht15.c
> > @@ -926,7 +926,13 @@ static int __devinit sht15_probe(struct platform_device *pdev)
> > if (voltage)
> > data->supply_uV = voltage;
> >
> > - regulator_enable(data->reg);
> > + ret = regulator_enable(data->reg);
> > + if (ret != 0) {
> > + dev_err(&pdev->dev,
> > + "failed to enable regulator: %d\n", ret);
> > + return ret;
> > + }
> > +
> > /*
> > * Setup a notifier block to update this if another device
> > * causes the voltage to change
>
> This needs the same fix-up as in 3.4.y:
Thanks Ben, I'll queue this fix for 3.5.
Cheers,
--
Luis
>
> --- From: Ben Hutchings <ben@xxxxxxxxxxxxxxx> Subject: hwmon: sht15:
> Fix memory leak if regulator_enable() fails Date: Sat, 16 Mar 2013
> 04:11:01 +0000
>
> Commit 3e78080f8148 ('hwmon: (sht15) Check return value of
> regulator_enable()') depends on the use of devm_kmalloc() for automatic
> resource cleanup in the failure cases, which was introduced in 3.7. In
> older stable branches, explicit cleanup is needed.
>
> Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
> ---
> --- a/drivers/hwmon/sht15.c
> +++ b/drivers/hwmon/sht15.c
> @@ -930,7 +930,7 @@
> if (ret != 0) {
> dev_err(&pdev->dev,
> "failed to enable regulator: %d\n", ret);
> - return ret;
> + goto err_free_data;
> }
>
> /*
>
> --
> Ben Hutchings
> When you say `I wrote a program that crashed Windows', people just stare ...
> and say `Hey, I got those with the system, *for free*'. - Linus Torvalds
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