--- a/arch/arm/plat-omap/usb.c
+++ b/arch/arm/plat-omap/usb.c
@@ -193,13 +193,10 @@ static u32 __init omap_usb0_init(unsigned nwires, unsigned is_device)
 
 		l = omap_readl(USB_TRANSCEIVER_CTRL);
 		l &= ~(7 << 4);
-		omap_writel(l, USB_TRANSCEIVER_CTRL);
-
 		if (!is_device) {
-			l = omap_readl(USB_TRANSCEIVER_CTRL);
 			l |= (3 << 1);
-			omap_writel(l, USB_TRANSCEIVER_CTRL);
 		}
+		omap_writel(l, USB_TRANSCEIVER_CTRL);
 
 		return 3 << 16;
 	}
@@ -643,9 +640,6 @@ omap_otg_init(struct omap_usb_config *config)
 
 		w = omap_readw(ULPD_CLOCK_CTRL);
 		w &= ~USB_MCLK_EN;
-		omap_writew(w, ULPD_CLOCK_CTRL);
-
-		w = omap_readw(ULPD_CLOCK_CTRL);
 		w |= DIS_USB_PVCI_CLK;
 		omap_writew(w, ULPD_CLOCK_CTRL);
 	}
--- a/drivers/i2c/chips/isp1301_omap.c
+++ b/drivers/i2c/chips/isp1301_omap.c
@@ -520,7 +520,7 @@ static void update_otg1(struct isp1301 *isp, u8 int_src)
 
 	otg_ctrl = omap_readl(OTG_CTRL) & OTG_CTRL_MASK;
 	otg_ctrl &= ~OTG_XCEIV_INPUTS;
-	otg_ctrl &= (OTG_ID|OTG_ASESSVLD|OTG_VBUSVLD);
+	otg_ctrl &= ~(OTG_ID|OTG_ASESSVLD|OTG_VBUSVLD);
 
 
 	if (int_src & INTR_SESS_VLD)
--- a/drivers/usb/gadget/omap_udc.c
+++ b/drivers/usb/gadget/omap_udc.c
@@ -2858,7 +2858,6 @@ static int __init omap_udc_probe(struct platform_device *pdev)
 			 * means we always "need" the 48MHz clock.
 			 */
 			u32 tmp = omap_readl(FUNC_MUX_CTRL_0);
-
 			tmp &= ~VBUS_CTRL_1510;
 			omap_writel(tmp, FUNC_MUX_CTRL_0);
 			tmp |= VBUS_MODE_1510;
--- a/drivers/usb/gadget/omap_udc.h
+++ b/drivers/usb/gadget/omap_udc.h
@@ -202,6 +202,6 @@ struct omap_udc {
 #define	VBUS_MODE_1510		(1 << 18)	/* 0 hardware, 1 software */
 
 #define	HMC_1510	((omap_readl(MOD_CONF_CTRL_0) >> 1) & 0x3f)
-#define	HMC_1610	omap_readl(OTG_SYSCON_2 & 0x3f)
+#define	HMC_1610	(omap_readl(OTG_SYSCON_2) & 0x3f)
 #define	HMC		(cpu_is_omap15xx() ? HMC_1510 : HMC_1610)
 
--- a/drivers/usb/gadget/omap_udc.c
+++ b/drivers/usb/gadget/omap_udc.c
@@ -2003,7 +2003,7 @@ static irqreturn_t omap_udc_pio_irq(int irq, void *_dev)
 		ep->irqs++;
 
 		omap_writew(epnum | UDC_EP_DIR | UDC_EP_SEL, UDC_EP_NUM);
-		if (omap_readw(UDC_STAT_FLG & UDC_ACK)) {
+		if (omap_readw(UDC_STAT_FLG) & UDC_ACK) {
 			ep->ackwait = 0;
 			if (!list_empty(&ep->queue)) {
 				req = container_of(ep->queue.next,