RE: [PATCH v3 25/27] powerpc/powernv/pmem: Expose the serial number in sysfs

[Alastair D'Silva]

On Fri, 2020-02-28 at 08:15 +0100, Greg Kroah-Hartman wrote:
> On Fri, Feb 28, 2020 at 05:25:31PM +1100, Andrew Donnellan wrote:
> > On 21/2/20 2:27 pm, Alastair D'Silva wrote:
> > > +int ocxlpmem_sysfs_add(struct ocxlpmem *ocxlpmem)
> > > +{
> > > +	int i, rc;
> > > +
> > > +	for (i = 0; i < ARRAY_SIZE(attrs); i++) {
> > > +		rc = device_create_file(&ocxlpmem->dev, &attrs[i]);
> > > +		if (rc) {
> > > +			for (; --i >= 0;)
> > > +				device_remove_file(&ocxlpmem->dev,
> > > &attrs[i]);
> > 
> > I'd rather avoid weird for loop constructs if possible.
> > 
> > Is it actually dangerous to call device_remove_file() on an attr
> > that hasn't
> > been added? If not then I'd rather define an err: label and loop
> > over the
> > whole array there.
> 
> None of this should be used at all, just use attribute groups
> properly
> and the driver core will handle this all for you.
> 
> device_create/remove_file should never be called by anyone anymore if
> at all
> possible.
> 
> thanks,
> 
> greg k-h


Thanks, I'll rework it to use the .groups member of struct pci_driver.

-- 
Alastair D'Silva
Open Source Developer
Linux Technology Centre, IBM Australia
mob: 0423 762 819