usb: gadget: pxa27x_udc: prepare and unprepare the clock

Add clock prepare and unprepare as required by clock framework.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Felipe Balbi <balbi@ti.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/usb/gadget/pxa27x_udc.c b/drivers/usb/gadget/pxa27x_udc.c
index cdf4d678be96..597d39f89420 100644
--- a/drivers/usb/gadget/pxa27x_udc.c
+++ b/drivers/usb/gadget/pxa27x_udc.c
@@ -2446,6 +2446,9 @@ static int pxa_udc_probe(struct platform_device *pdev)
                 retval = PTR_ERR(udc->clk);
                 goto err_clk;
         }
+        retval = clk_prepare(udc->clk);
+        if (retval)
+                goto err_clk_prepare;
 
         retval = -ENOMEM;
         udc->regs = ioremap(regs->start, resource_size(regs));
@@ -2483,6 +2486,8 @@ err_add_udc:
 err_irq:
         iounmap(udc->regs);
 err_map:
+        clk_unprepare(udc->clk);
+err_clk_prepare:
         clk_put(udc->clk);
         udc->clk = NULL;
 err_clk:
@@ -2509,6 +2514,7 @@ static int pxa_udc_remove(struct platform_device *_dev)
 
         udc->transceiver = NULL;
         the_controller = NULL;
+        clk_unprepare(udc->clk);
         clk_put(udc->clk);
         iounmap(udc->regs);