Messages in this thread | | | Date | Wed, 30 Mar 2011 21:28:28 -0600 | From | Grant Likely <> | Subject | Re: [PATCH] gpio: pca953x: fix error handling path in probe() call |
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On Thu, Mar 31, 2011 at 07:18:46AM +0900, Mark Brown wrote: > From: Ben Dooks <ben-linux@fluff.org> > > If the device fails to respond, then the error path tries to remove an > interrupt that never got registered, which causes an backtrace from the > interrupt handling code. > > Fix this by ensuring that the cleanup path has two labels and use the > correct path as needed. > > fixes the following error: > > WARNING: at kernel/irq/manage.c:908 __free_irq+0x80/0x160() > Trying to free already-free IRQ 0 > > Signed-off-by: Ben Dooks <ben-linux@fluff.org> > Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Applied, thanks.
g.
> --- > drivers/gpio/pca953x.c | 5 +++-- > 1 files changed, 3 insertions(+), 2 deletions(-) > > diff --git a/drivers/gpio/pca953x.c b/drivers/gpio/pca953x.c > index 583e925..7630ab7 100644 > --- a/drivers/gpio/pca953x.c > +++ b/drivers/gpio/pca953x.c > @@ -558,7 +558,7 @@ static int __devinit pca953x_probe(struct i2c_client *client, > > ret = gpiochip_add(&chip->gpio_chip); > if (ret) > - goto out_failed; > + goto out_failed_irq; > > if (pdata->setup) { > ret = pdata->setup(client, chip->gpio_chip.base, > @@ -570,8 +570,9 @@ static int __devinit pca953x_probe(struct i2c_client *client, > i2c_set_clientdata(client, chip); > return 0; > > -out_failed: > +out_failed_irq: > pca953x_irq_teardown(chip); > +out_failed: > kfree(chip->dyn_pdata); > kfree(chip); > return ret; > -- > 1.7.4.1 >
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