Hello Dan Carpenter,
Thank you for your feedback.
Indeed, it will not add more information in this case so sure I can
remove that line.
Please, tell me how it is best to procced next: submitting another
PATCH (V6) in this case, or to create a Fixes to the PATCH_V5?
Best Regards,
Marius
On Thu, 2023-09-14 at 14:29 +0300, Dan Carpenter wrote:
> EXTERNAL EMAIL: Do not click links or open attachments unless you
> know the content is safe
>
> On Thu, Sep 14, 2023 at 01:01:02PM +0300, Dan Carpenter wrote:
> > Hello Marius Cristea,
> >
> > The patch 33ec3e5fc1ea: "iio: adc: adding support for MCP3564 ADC"
> > from Aug 29, 2023 (linux-next), leads to the following Smatch
> > static
> > checker warning:
> >
> > drivers/iio/adc/mcp3564.c:1426 mcp3564_probe()
> > warn: address of NULL pointer 'indio_dev'
> >
> > drivers/iio/adc/mcp3564.c
> > 1418 static int mcp3564_probe(struct spi_device *spi)
> > 1419 {
> > 1420 int ret;
> > 1421 struct iio_dev *indio_dev;
> > 1422 struct mcp3564_state *adc;
> > 1423
> > 1424 indio_dev = devm_iio_device_alloc(&spi->dev,
> > sizeof(*adc));
> > 1425 if (!indio_dev) {
> > --> 1426 dev_err_probe(&indio_dev->dev,
> > PTR_ERR(indio_dev),
> > ^^^^^^^^^^^^^^^
> > This will crash
>
> Actually I think that dev_err_probe() has a check for this kind of
> bug
> so it doesn't actually crash. The check is burried deep into the
> call
> tree where it prints the name and if the address is < PAGE_SIZE it
> just
> prints the device name as "(efault)". But it's still not ideal.
>
> regads,
> dan carpenter
>
