usb: otg: mv_otg: remove unused clock

The origianl understanding of clock is wrong. The OTG controller
only have one clock input.
Passing clock name by pdata is wrong. The clock is defined by device
iteself.

Signed-off-by: Chao Xie <[e-mail]>
Signed-off-by: Felipe Balbi <[e-mail]>

drivers/usb/phy/phy-mv-usb.c

···
 
 static void otg_clock_enable(struct mv_otg *mvotg)
 {
-	unsigned int i;
-
-	for (i = 0; i < mvotg->clknum; i++)
-		clk_prepare_enable(mvotg->clk[i]);
+	clk_prepare_enable(mvotg->clk);
 }
 
 static void otg_clock_disable(struct mv_otg *mvotg)
 {
-	unsigned int i;
-
-	for (i = 0; i < mvotg->clknum; i++)
-		clk_disable_unprepare(mvotg->clk[i]);
+	clk_disable_unprepare(mvotg->clk);
 }
 
 static int mv_otg_enable_internal(struct mv_otg *mvotg)
···
 	struct mv_otg *mvotg;
 	struct usb_otg *otg;
 	struct resource *r;
-	int retval = 0, clk_i, i;
-	size_t size;
+	int retval = 0, i;
 
 	if (pdata == NULL) {
 		dev_err(&pdev->dev, "failed to get platform data\n");
 		return -ENODEV;
 	}
 
-	size = sizeof(*mvotg) + sizeof(struct clk *) * pdata->clknum;
-	mvotg = devm_kzalloc(&pdev->dev, size, GFP_KERNEL);
+	mvotg = devm_kzalloc(&pdev->dev, sizeof(*mvotg), GFP_KERNEL);
 	if (!mvotg) {
 		dev_err(&pdev->dev, "failed to allocate memory!\n");
 		return -ENOMEM;
···
 	mvotg->pdev = pdev;
 	mvotg->pdata = pdata;
 
-	mvotg->clknum = pdata->clknum;
-	for (clk_i = 0; clk_i < mvotg->clknum; clk_i++) {
-		mvotg->clk[clk_i] = devm_clk_get(&pdev->dev,
-						pdata->clkname[clk_i]);
-		if (IS_ERR(mvotg->clk[clk_i])) {
-			retval = PTR_ERR(mvotg->clk[clk_i]);
-			return retval;
-		}
-	}
+	mvotg->clk = devm_clk_get(&pdev->dev, NULL);
+	if (IS_ERR(mvotg->clk))
+		return PTR_ERR(mvotg->clk);
 
 	mvotg->qwork = create_singlethread_workqueue("mv_otg_queue");
 	if (!mvotg->qwork) {

drivers/usb/phy/phy-mv-usb.h

···
 
 	unsigned int active;
 	unsigned int clock_gating;
-	unsigned int clknum;
-	struct clk *clk[0];
+	struct clk *clk;
 };
 
 #endif