As the only caller of dma_supported() outside of DMA API internals, the
qtfnmac driver stands out and invites scrutiny. Thankfully, it's not
being used for evil, but it is entirely redundant, since it open-codes a
check that the DMA mask setting functions are going to perform anyway.
In fact, the whole qtnf_pcie_init_dma_mask() function is nothing more
than a rather long-winded implementation of dma_set_mask_and_coherent(),
so let's just use that directly.
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Acked-by: Sergey Matyukevich <sergey.matyukevich.os@quantenna.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
-static int
-qtnf_pcie_init_dma_mask(struct qtnf_pcie_bus_priv *priv, u64 dma_mask)
-{
- int ret;
-
- ret = dma_supported(&priv->pdev->dev, dma_mask);
- if (!ret) {
- pr_err("DMA mask %llu not supported\n", dma_mask);
- return ret;
- }
-
- ret = pci_set_dma_mask(priv->pdev, dma_mask);
- if (ret) {
- pr_err("failed to set DMA mask %llu\n", dma_mask);
- return ret;
- }
-
- ret = pci_set_consistent_dma_mask(priv->pdev, dma_mask);
- if (ret) {
- pr_err("failed to set consistent DMA mask %llu\n", dma_mask);
- return ret;
- }
-
- return ret;
-}
-
static void qtnf_tune_pcie_mps(struct qtnf_pcie_bus_priv *priv)
{
struct pci_dev *pdev = priv->pdev;
static void qtnf_tune_pcie_mps(struct qtnf_pcie_bus_priv *priv)
{
struct pci_dev *pdev = priv->pdev;
- ret = qtnf_pcie_init_dma_mask(pcie_priv, DMA_BIT_MASK(32));
+ ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
if (ret) {
pr_err("PCIE DMA mask init failed\n");
goto err_base;
if (ret) {
pr_err("PCIE DMA mask init failed\n");
goto err_base;