[U-Boot] [PATCH] usb: ohci: ohci-da8xx: Cleanup Error handling and fix flags

[Adam Ford]

Per feedback from Marek, he suggested better handling and
to enable DM_FLAG_OS_PREPARE, this patch re-orders some of
the error checking, and errors returns the error code right
away and also sets DM_FLAG_OS_PREPARE.

Signed-off-by: Adam Ford <aford173 at gmail.com>

diff --git a/drivers/usb/host/ohci-da8xx.c b/drivers/usb/host/ohci-da8xx.c
index e8a495fde5..233df57b4d 100644
--- a/drivers/usb/host/ohci-da8xx.c
+++ b/drivers/usb/host/ohci-da8xx.c
@@ -93,6 +93,10 @@ static int ohci_da8xx_probe(struct udevice *dev)
 	err = 0;
 	priv->clock_count = 0;
 	clock_nb = dev_count_phandle_with_args(dev, "clocks", "#clock-cells");
+
+	if (clock_nb < 0)
+		return clock_nb;
+
 	if (clock_nb > 0) {
 		priv->clocks = devm_kcalloc(dev, clock_nb, sizeof(struct clk),
 					    GFP_KERNEL);
@@ -112,9 +116,6 @@ static int ohci_da8xx_probe(struct udevice *dev)
 			}
 			priv->clock_count++;
 		}
-	} else if (clock_nb != -ENOENT) {
-		dev_err(dev, "failed to get clock phandle(%d)\n", clock_nb);
-		return clock_nb;
 	}
 
 	err = usb_cpu_init();
@@ -170,6 +171,6 @@ U_BOOT_DRIVER(ohci_generic) = {
 	.remove = ohci_da8xx_remove,
 	.ops	= &ohci_usb_ops,
 	.priv_auto_alloc_size = sizeof(struct da8xx_ohci),
-	.flags	= DM_FLAG_ALLOC_PRIV_DMA,
+	.flags	= DM_FLAG_ALLOC_PRIV_DMA | DM_FLAG_OS_PREPARE,
 };
 #endif
-- 
2.17.1