[PATCH -next] usb: mtu3: fix dbginfo in qmu_tx_zlp_error_handler

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Fixes gcc '-Wunused-but-set-variable' warning:

drivers/usb/mtu3/mtu3_qmu.c: In function 'qmu_tx_zlp_error_handler':
drivers/usb/mtu3/mtu3_qmu.c:385:22: warning:
 variable 'req' set but not used [-Wunused-but-set-variable]

It seems dbginfo original intention is print 'req' other than 'mreq'

Signed-off-by: YueHaibing <yuehaibing@xxxxxxxxxx>
---
 drivers/usb/mtu3/mtu3_qmu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/mtu3/mtu3_qmu.c b/drivers/usb/mtu3/mtu3_qmu.c
index 73ac042..09f19f7 100644
--- a/drivers/usb/mtu3/mtu3_qmu.c
+++ b/drivers/usb/mtu3/mtu3_qmu.c
@@ -402,7 +402,7 @@ static void qmu_tx_zlp_error_handler(struct mtu3 *mtu, u8 epnum)
 		return;
 	}
 
-	dev_dbg(mtu->dev, "%s send ZLP for req=%p\n", __func__, mreq);
+	dev_dbg(mtu->dev, "%s send ZLP for req=%p\n", __func__, req);
 
 	mtu3_clrbits(mbase, MU3D_EP_TXCR0(mep->epnum), TX_DMAREQEN);






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