usb: phy: fix return value check of usb_get_phy
usb_get_phy will return -ENODEV if it's not able to find the phy. Hence
fixed all the callers of usb_get_phy to check for this error condition
instead of relying on a non-zero value as success condition.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
diff --git a/drivers/usb/gadget/omap_udc.c b/drivers/usb/gadget/omap_udc.c
index cf8bf26..7b71295 100644
--- a/drivers/usb/gadget/omap_udc.c
+++ b/drivers/usb/gadget/omap_udc.c
@@ -35,6 +35,7 @@
#include <linux/usb/otg.h>
#include <linux/dma-mapping.h>
#include <linux/clk.h>
+#include <linux/err.h>
#include <linux/prefetch.h>
#include <asm/byteorder.h>
@@ -1211,7 +1212,7 @@
/* NOTE: non-OTG systems may use SRP TOO... */
} else if (!(udc->devstat & UDC_ATT)) {
- if (udc->transceiver)
+ if (!IS_ERR_OR_NULL(udc->transceiver))
retval = otg_start_srp(udc->transceiver->otg);
}
spin_unlock_irqrestore(&udc->lock, flags);
@@ -1343,7 +1344,7 @@
struct omap_udc *udc;
udc = container_of(gadget, struct omap_udc, gadget);
- if (udc->transceiver)
+ if (!IS_ERR_OR_NULL(udc->transceiver))
return usb_phy_set_power(udc->transceiver, mA);
return -EOPNOTSUPP;
}
@@ -1792,12 +1793,12 @@
if (devstat & UDC_ATT) {
udc->gadget.speed = USB_SPEED_FULL;
VDBG("connect\n");
- if (!udc->transceiver)
+ if (IS_ERR_OR_NULL(udc->transceiver))
pullup_enable(udc);
// if (driver->connect) call it
} else if (udc->gadget.speed != USB_SPEED_UNKNOWN) {
udc->gadget.speed = USB_SPEED_UNKNOWN;
- if (!udc->transceiver)
+ if (IS_ERR_OR_NULL(udc->transceiver))
pullup_disable(udc);
DBG("disconnect, gadget %s\n",
udc->driver->driver.name);
@@ -1837,12 +1838,12 @@
udc->driver->suspend(&udc->gadget);
spin_lock(&udc->lock);
}
- if (udc->transceiver)
+ if (!IS_ERR_OR_NULL(udc->transceiver))
usb_phy_set_suspend(
udc->transceiver, 1);
} else {
VDBG("resume\n");
- if (udc->transceiver)
+ if (!IS_ERR_OR_NULL(udc->transceiver))
usb_phy_set_suspend(
udc->transceiver, 0);
if (udc->gadget.speed == USB_SPEED_FULL
@@ -2154,7 +2155,7 @@
omap_writew(UDC_IRQ_SRC_MASK, UDC_IRQ_SRC);
/* connect to bus through transceiver */
- if (udc->transceiver) {
+ if (!IS_ERR_OR_NULL(udc->transceiver)) {
status = otg_set_peripheral(udc->transceiver->otg,
&udc->gadget);
if (status < 0) {
@@ -2201,7 +2202,7 @@
if (machine_without_vbus_sense())
omap_vbus_session(&udc->gadget, 0);
- if (udc->transceiver)
+ if (!IS_ERR_OR_NULL(udc->transceiver))
(void) otg_set_peripheral(udc->transceiver->otg, NULL);
else
pullup_disable(udc);
@@ -2866,7 +2867,7 @@
* but not having one probably means no VBUS detection.
*/
xceiv = usb_get_phy(USB_PHY_TYPE_USB2);
- if (xceiv)
+ if (!IS_ERR_OR_NULL(xceiv))
type = xceiv->label;
else if (config->otg) {
DBG("OTG requires external transceiver!\n");
@@ -2898,7 +2899,7 @@
case 16:
case 19:
case 25:
- if (!xceiv) {
+ if (IS_ERR_OR_NULL(xceiv)) {
DBG("external transceiver not registered!\n");
type = "unknown";
}
@@ -3010,7 +3011,7 @@
udc = NULL;
cleanup0:
- if (xceiv)
+ if (!IS_ERR_OR_NULL(xceiv))
usb_put_phy(xceiv);
if (cpu_is_omap16xx() || cpu_is_omap24xx() || cpu_is_omap7xx()) {
@@ -3040,7 +3041,7 @@
udc->done = &done;
pullup_disable(udc);
- if (udc->transceiver) {
+ if (!IS_ERR_OR_NULL(udc->transceiver)) {
usb_put_phy(udc->transceiver);
udc->transceiver = NULL;
}