On Tue, Feb 05, 2019 at 11:42:46AM -0800, Dmitry Torokhov wrote: > > + dev_err(&pdev->dev, "Failed to lookup pwm clock: %ld\n", > > + PTR_ERR(vibrator->clk)); > > + return PTR_ERR(vibrator->clk); > > + } > > + > > + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); > > + if (!res) { > > + dev_err(&pdev->dev, "Failed to get platform resource\n"); > > + return -ENODEV; > > + } > > + > > + vibrator->base = devm_ioremap(&pdev->dev, res->start, > > + resource_size(res)); > > + if (IS_ERR(vibrator->base)) { > > devm_ioremap() returns NULL on error. You either need to check for NULL > or see of you can use devm_ioremap_resource(). I originally tried to use devm_ioremap_resource() but the call to devm_request_mem_region() would fail. I'll go with the NULL check here for devm_ioremap(). Thanks for the review! Brian