Hi Geert, On Fri, Aug 16, 2019 at 10:21:42AM +0200, Geert Uytterhoeven wrote: > On Wed, Aug 14, 2019 at 4:55 PM Laurent Pinchart wrote: > > This helps identifying the IP core version, for debugging purpose only > > for now. > > > > Signed-off-by: Laurent Pinchart <[email protected]> > > > --- a/drivers/media/platform/rcar-fcp.c > > +++ b/drivers/media/platform/rcar-fcp.c > > > @@ -138,6 +167,18 @@ static int rcar_fcp_probe(struct platform_device *pdev) > > > > pm_runtime_enable(&pdev->dev); > > > > + fcp->iomem = devm_platform_ioremap_resource(pdev, 0); > > + if (IS_ERR(fcp->iomem)) > > + return PTR_ERR(fcp->iomem); > > + > > + pm_runtime_get_sync(&pdev->dev); > > + version = rcar_fcp_read(fcp, FCP_VCR); > > + pm_runtime_put(&pdev->dev); > > Unless (dynamic) debugging is enabled, all of the above is done for obtaining > a version number that is not used. > Can this be improved?
With FCNL support we'll need that anyway. This patch comes from a larger FCNL series that rejects devices with an unknown version, and I thought it could be fast-tracked in a stripped form already. I don't mind either way, I can wait until it's time to merge FCNL support. > > + > > + dev_dbg(&pdev->dev, "FCP category %u revision %u\n", > > + (version & FCP_VCR_CATEGORY_MASK) >> FCP_VCR_CATEGORY_SHIFT, > > + (version & FCP_VCR_REVISION_MASK) >> > > FCP_VCR_REVISION_SHIFT); > > + > > mutex_lock(&fcp_lock); > > list_add_tail(&fcp->list, &fcp_devices); > > mutex_unlock(&fcp_lock); -- Regards, Laurent Pinchart
