usb: phy: isp1301-omap: fix smatch warnings

phy-isp1301-omap produces the following smatch warnings:

drivers/usb/phy/phy-isp1301-omap.c:1280 isp1301_set_host() warn: variable dereferenced before check 'otg' (see line 1278)
drivers/usb/phy/phy-isp1301-omap.c:1336 isp1301_set_peripheral() warn: variable dereferenced before check 'otg' (see line 1334)
drivers/usb/phy/phy-isp1301-omap.c:1417 isp1301_start_srp() warn: variable dereferenced before check 'otg' (see line 1414)
drivers/usb/phy/phy-isp1301-omap.c:1445 isp1301_start_hnp() warn: variable dereferenced before check 'otg' (see line 1442)

Fix by deleting bogus NULL pointer checks. The USB framework will always
call us with a valid OTG pointer.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Felipe Balbi <balbi@ti.com>

1 files changed, 4 insertions, 5 deletions

diff --git a/drivers/usb/phy/phy-isp1301-omap.c b/drivers/usb/phy/phy-isp1301-omap.c
index d3a5160e4cc7..6e146d723b37 100644
--- a/drivers/usb/phy/phy-isp1301-omap.c
+++ b/drivers/usb/phy/phy-isp1301-omap.c
@@ -1277,7 +1277,7 @@ isp1301_set_host(struct usb_otg *otg, struct usb_bus *host)
 {
         struct isp1301  *isp = container_of(otg->phy, struct isp1301, phy);
 
-        if (!otg || isp != the_transceiver)
+        if (isp != the_transceiver)
                 return -ENODEV;
 
         if (!host) {
@@ -1333,7 +1333,7 @@ isp1301_set_peripheral(struct usb_otg *otg, struct usb_gadget *gadget)
 {
         struct isp1301  *isp = container_of(otg->phy, struct isp1301, phy);
 
-        if (!otg || isp != the_transceiver)
+        if (isp != the_transceiver)
                 return -ENODEV;
 
         if (!gadget) {
@@ -1414,8 +1414,7 @@ isp1301_start_srp(struct usb_otg *otg)
         struct isp1301  *isp = container_of(otg->phy, struct isp1301, phy);
         u32             otg_ctrl;
 
-        if (!otg || isp != the_transceiver
-                        || isp->phy.state != OTG_STATE_B_IDLE)
+        if (isp != the_transceiver || isp->phy.state != OTG_STATE_B_IDLE)
                 return -ENODEV;
 
         otg_ctrl = omap_readl(OTG_CTRL);
@@ -1442,7 +1441,7 @@ isp1301_start_hnp(struct usb_otg *otg)
         struct isp1301  *isp = container_of(otg->phy, struct isp1301, phy);
         u32 l;
 
-        if (!otg || isp != the_transceiver)
+        if (isp != the_transceiver)
                 return -ENODEV;
         if (otg->default_a && (otg->host == NULL || !otg->host->b_hnp_enable))
                 return -ENOTCONN;