wusb: release mutex in the error path of whci-hcd's whc_do_gencmd()

Signed-off-by: David Vrabel <david.vrabel@csr.com>

diff --git a/drivers/usb/host/whci/hw.c b/drivers/usb/host/whci/hw.c
index ac86e59..d498e72 100644 (file)
--- a/drivers/usb/host/whci/hw.c
+++ b/drivers/usb/host/whci/hw.c
@@ -50,6 +50,7 @@ int whc_do_gencmd(struct whc *whc, u32 cmd, u32 params, void *addr, size_t len)
        unsigned long flags;
        dma_addr_t dma_addr;
        int t;
+       int ret = 0;
 
        mutex_lock(&whc->mutex);
 
@@ -61,7 +62,8 @@ int whc_do_gencmd(struct whc *whc, u32 cmd, u32 params, void *addr, size_t len)
                dev_err(&whc->umc->dev, "generic command timeout (%04x/%04x)\n",
                        le_readl(whc->base + WUSBGENCMDSTS),
                        le_readl(whc->base + WUSBGENCMDPARAMS));
-               return -ETIMEDOUT;
+               ret = -ETIMEDOUT;
+               goto out;
        }
 
        if (addr) {
@@ -80,8 +82,8 @@ int whc_do_gencmd(struct whc *whc, u32 cmd, u32 params, void *addr, size_t len)
                  whc->base + WUSBGENCMDSTS);
 
        spin_unlock_irqrestore(&whc->lock, flags);
-
+out:
        mutex_unlock(&whc->mutex);
 
-       return 0;
+       return ret;
 }