usb: otg: Remove one unnecessary I2C read request.

To get the ID status there was an I2C read transfer. Removed this I2C
read transfer as this info can be used from existing variable(linkstat).

Signed-off-by: Hema HK <hemahk@ti.com>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

diff --git a/drivers/usb/otg/twl6030-usb.c b/drivers/usb/otg/twl6030-usb.c
index eca4591..88989e6 100644 (file)
--- a/drivers/usb/otg/twl6030-usb.c
+++ b/drivers/usb/otg/twl6030-usb.c
@@ -149,7 +149,6 @@ static int twl6030_set_phy_clk(struct otg_transceiver *x, int on)
 
 static int twl6030_phy_init(struct otg_transceiver *x)
 {
-       u8 hw_state;
        struct twl6030_usb *twl;
        struct device *dev;
        struct twl4030_usb_data *pdata;
@@ -158,9 +157,7 @@ static int twl6030_phy_init(struct otg_transceiver *x)
        dev  = twl->dev;
        pdata = dev->platform_data;
 
-       hw_state = twl6030_readb(twl, TWL6030_MODULE_ID0, STS_HW_CONDITIONS);
-
-       if (hw_state & STS_USB_ID)
+       if (twl->linkstat == USB_EVENT_ID)
                pdata->phy_power(twl->dev, 1, 1);
        else
                pdata->phy_power(twl->dev, 0, 1);
@@ -290,6 +287,7 @@ static irqreturn_t twl6030_usbotg_irq(int irq, void *_twl)
                status = USB_EVENT_ID;
                twl->otg.default_a = true;
                twl->otg.state = OTG_STATE_A_IDLE;
+               twl->linkstat = status;
                blocking_notifier_call_chain(&twl->otg.notifier, status,
                                                        twl->otg.gadget);
        } else  {
@@ -299,7 +297,6 @@ static irqreturn_t twl6030_usbotg_irq(int irq, void *_twl)
                                                                0x1);
        }
        twl6030_writeb(twl, TWL_MODULE_USB, USB_ID_INT_LATCH_CLR, status);
-       twl->linkstat = status;
 
        return IRQ_HANDLED;
 }