linux-kernel - Re: [PATCH v2 1/4] cxl: add a firmware update mechanism using the sysfs firmware loader

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Message-ID: <20230609120656.0000554b@Huawei.com>
Date:   Fri, 9 Jun 2023 12:06:56 +0100
From:   Jonathan Cameron <Jonathan.Cameron@...wei.com>
To:     "Verma, Vishal L" <vishal.l.verma@...el.com>
CC:     "Jiang, Dave" <dave.jiang@...el.com>,
        "Schofield, Alison" <alison.schofield@...el.com>,
        "linux-cxl@...r.kernel.org" <linux-cxl@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "Williams, Dan J" <dan.j.williams@...el.com>,
        "Weiny, Ira" <ira.weiny@...el.com>,
        "bwidawsk@...nel.org" <bwidawsk@...nel.org>,
        "Weight, Russell H" <russell.h.weight@...el.com>,
        "dave@...olabs.net" <dave@...olabs.net>
Subject: Re: [PATCH v2 1/4] cxl: add a firmware update mechanism using the
 sysfs firmware loader


> >   
> > > +       struct fw_upload *fwl;
> > > +       int rc;
> > > +
> > > +       if (!test_bit(CXL_MEM_COMMAND_ID_GET_FW_INFO, cxlds->enabled_cmds))
> > > +               return 0;
> > > +
> > > +       fwl = firmware_upload_register(THIS_MODULE, &cxlmd->dev,
> > > +                                      dev_name(&cxlmd->dev),
> > > +                                      &cxl_memdev_fw_ops, cxlds);
> > > +       if (IS_ERR(fwl)) {
> > > +               dev_err(&cxlmd->dev, "Failed to register firmware loader\n");
> > > +               return PTR_ERR(fwl);  
> > 
> > It's called from probe only so could use dev_err_probe() for slight
> > simplification.  
> 
> From what I can tell, this ends up looking like:
> 
> 	fwl = firmware_upload_register(THIS_MODULE, dev,
> dev_name(dev),
> 				       &cxl_memdev_fw_ops, cxlds);
> 	rc = dev_err_probe(dev, PTR_ERR(fwl),
> 			   "Failed to register firmware loader\n");
> 	if (rc)
> 		return rc;
> 
> Is that what you meant? Happy to make the change if so.

	fwl = firmware_upload_register(THIS_MODULE, dev, dev_name(dev),
				       &cxl_memdev_fw_ops, cxlds);
	if (IS_ERR(fwl)
		return dev_err_probe(dev, PTR_ERR(fwl),
				     "Failed to register firmware loader\n");