static int haswell_audio_probe(struct platform_device *pdev)
 {
        struct snd_soc_acpi_mach *mach;
-       const char *platform_name = NULL;
        int ret;
 
        haswell_rt5640.dev = &pdev->dev;
 
        /* override plaform name, if required */
        mach = (&pdev->dev)->platform_data;
-       if (mach) /* extra check since legacy does not pass parameters */
-               platform_name = mach->mach_params.platform;
-
        ret = snd_soc_fixup_dai_links_platform_name(&haswell_rt5640,
-                                                   platform_name);
+                                                   mach->mach_params.platform);
        if (ret)
                return ret;