GFP_DMA in sd_revalidate_disk

Hello,

is GFP_DMA really needed in sd_revalidate_disk() in every circumstances? That's the code:

    buffer = kmalloc(SD_BUF_SIZE, GFP_KERNEL | __GFP_DMA);
    if (!buffer) {
        printk(KERN_WARNING "(sd_revalidate_disk:) Memory allocation "
               "failure.\n");
        goto out;
    }

Or should could the check (sdp->host->unchecked_isa_dma ? __GFP_DMA : 0) applied here, too?

Thanks!

Regards,
Bernhard