mmc: omap_hsmmc: Skip platform_get_resource_byname() for dt case

MMC driver probe will abort for DT case because of failed
platform_get_resource_byname() lookup. Fix it by skipping resource
lookup byname for device tree build.

Issue is hidden because hwmod populates the IO resources which
helps to succeed platform_get_resource_byname() and probe.

Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>

1 files changed, 15 insertions, 13 deletions

diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index dc89aead35a5..eccedc7d06a4 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -1911,21 +1911,23 @@ static int omap_hsmmc_probe(struct platform_device *pdev)
 
         omap_hsmmc_conf_bus_power(host);
 
-        res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "tx");
-        if (!res) {
-                dev_err(mmc_dev(host->mmc), "cannot get DMA TX channel\n");
-                ret = -ENXIO;
-                goto err_irq;
-        }
-        tx_req = res->start;
+        if (!pdev->dev.of_node) {
+                res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "tx");
+                if (!res) {
+                        dev_err(mmc_dev(host->mmc), "cannot get DMA TX channel\n");
+                        ret = -ENXIO;
+                        goto err_irq;
+                }
+                tx_req = res->start;
 
-        res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "rx");
-        if (!res) {
-                dev_err(mmc_dev(host->mmc), "cannot get DMA RX channel\n");
-                ret = -ENXIO;
-                goto err_irq;
+                res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "rx");
+                if (!res) {
+                        dev_err(mmc_dev(host->mmc), "cannot get DMA RX channel\n");
+                        ret = -ENXIO;
+                        goto err_irq;
+                }
+                rx_req = res->start;
         }
-        rx_req = res->start;
 
         dma_cap_zero(mask);
         dma_cap_set(DMA_SLAVE, mask);