static int intel_th_output_attributes()

in intel_th/gth.c [409:462]

• 43 lines of code
• 8 McCabe index (conditional complexity)

static int intel_th_output_attributes(struct gth_device *gth)
{
	struct output_attribute *out_attrs;
	struct attribute **attrs;
	int i, j, nouts = TH_POSSIBLE_OUTPUTS;
	int nparms = ARRAY_SIZE(output_parms);
	int nattrs = nouts * nparms + 1;

	attrs = devm_kcalloc(gth->dev, nattrs, sizeof(void *), GFP_KERNEL);
	if (!attrs)
		return -ENOMEM;

	out_attrs = devm_kcalloc(gth->dev, nattrs,
				 sizeof(struct output_attribute),
				 GFP_KERNEL);
	if (!out_attrs)
		return -ENOMEM;

	for (i = 0; i < nouts; i++) {
		for (j = 0; j < nparms; j++) {
			unsigned int idx = i * nparms + j;
			char *name;

			name = devm_kasprintf(gth->dev, GFP_KERNEL, "%d_%s", i,
					      output_parms[j].name);
			if (!name)
				return -ENOMEM;

			out_attrs[idx].attr.attr.name = name;

			if (output_parms[j].readable) {
				out_attrs[idx].attr.attr.mode |= S_IRUGO;
				out_attrs[idx].attr.show = output_attr_show;
			}

			if (output_parms[j].writable) {
				out_attrs[idx].attr.attr.mode |= S_IWUSR;
				out_attrs[idx].attr.store = output_attr_store;
			}

			sysfs_attr_init(&out_attrs[idx].attr.attr);
			attrs[idx] = &out_attrs[idx].attr.attr;

			out_attrs[idx].gth = gth;
			out_attrs[idx].port = i;
			out_attrs[idx].parm = j;
		}
	}

	gth->output_group.name	= "outputs";
	gth->output_group.attrs = attrs;

	return sysfs_create_group(&gth->dev->kobj, &gth->output_group);
}