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/s3c-hsudc.c b/drivers/usb/gadget/s3c-hsudc.c
index 22326f2..7c91562 100644
--- a/drivers/usb/gadget/s3c-hsudc.c
+++ b/drivers/usb/gadget/s3c-hsudc.c
@@ -24,6 +24,7 @@
#include <linux/io.h>
#include <linux/slab.h>
#include <linux/clk.h>
+#include <linux/err.h>
#include <linux/usb/ch9.h>
#include <linux/usb/gadget.h>
#include <linux/usb/otg.h>
@@ -1165,7 +1166,7 @@
}
/* connect to bus through transceiver */
- if (hsudc->transceiver) {
+ if (!IS_ERR_OR_NULL(hsudc->transceiver)) {
ret = otg_set_peripheral(hsudc->transceiver->otg,
&hsudc->gadget);
if (ret) {
@@ -1220,7 +1221,7 @@
s3c_hsudc_stop_activity(hsudc);
spin_unlock_irqrestore(&hsudc->lock, flags);
- if (hsudc->transceiver)
+ if (!IS_ERR_OR_NULL(hsudc->transceiver))
(void) otg_set_peripheral(hsudc->transceiver->otg, NULL);
disable_irq(hsudc->irq);
@@ -1249,7 +1250,7 @@
if (!hsudc)
return -ENODEV;
- if (hsudc->transceiver)
+ if (!IS_ERR_OR_NULL(hsudc->transceiver))
return usb_phy_set_power(hsudc->transceiver, mA);
return -EOPNOTSUPP;
@@ -1385,7 +1386,7 @@
err_remap:
release_mem_region(res->start, resource_size(res));
err_res:
- if (hsudc->transceiver)
+ if (!IS_ERR_OR_NULL(hsudc->transceiver))
usb_put_phy(hsudc->transceiver);
regulator_bulk_free(ARRAY_SIZE(hsudc->supplies), hsudc->supplies);