[DMA]: Fix example code in DMA-mapping.txt

Spotted by Jack Spaar <jspaar@myrealbox.com>

Signed-off-by: David S. Miller <davem@redhat.com>

diff --git a/Documentation/DMA-mapping.txt b/Documentation/DMA-mapping.txt
index 13a53cb878d479f728b590c7b4a19eab7651a4c1..f4ac37f157ea905e06e132c6ee5a1587cb05cbae 100644 (file)
--- a/Documentation/DMA-mapping.txt
+++ b/Documentation/DMA-mapping.txt
@@ -222,14 +222,14 @@ Here is pseudo-code showing how this might be done:
        struct pci_dev *pdev;
 
        ...
-       if (pci_set_dma_mask(pdev, PLAYBACK_ADDRESS_BITS)) {
+       if (!pci_set_dma_mask(pdev, PLAYBACK_ADDRESS_BITS)) {
                card->playback_enabled = 1;
        } else {
                card->playback_enabled = 0;
                printk(KERN_WARN "%s: Playback disabled due to DMA limitations.\n",
                       card->name);
        }
-       if (pci_set_dma_mask(pdev, RECORD_ADDRESS_BITS)) {
+       if (!pci_set_dma_mask(pdev, RECORD_ADDRESS_BITS)) {
                card->record_enabled = 1;
        } else {
                card->record_enabled = 0;