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 <chao.xie@marvell.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

2 files changed, 8 insertions, 23 deletions

diff --git a/drivers/usb/phy/phy-mv-usb.c b/drivers/usb/phy/phy-mv-usb.c
index 6872bf0a3681..c987bbe27851 100644
--- a/drivers/usb/phy/phy-mv-usb.c
+++ b/drivers/usb/phy/phy-mv-usb.c
@@ -237,18 +237,12 @@ static void mv_otg_start_periphrals(struct mv_otg *mvotg, int on)
 
 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)
@@ -684,16 +678,14 @@ static int mv_otg_probe(struct platform_device *pdev)
         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;
@@ -708,15 +700,9 @@ static int mv_otg_probe(struct platform_device *pdev)
         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) {
diff --git a/drivers/usb/phy/phy-mv-usb.h b/drivers/usb/phy/phy-mv-usb.h
index 8a9e351b36ba..551da6eb0ba8 100644
--- a/drivers/usb/phy/phy-mv-usb.h
+++ b/drivers/usb/phy/phy-mv-usb.h
@@ -158,8 +158,7 @@ struct mv_otg {
 
         unsigned int active;
         unsigned int clock_gating;
-        unsigned int clknum;
-        struct clk *clk[0];
+        struct clk *clk;
 };
 
 #endif