[PATCH] gadget/mass_storage: remove >= 0 check for unsigned type

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| In file included from drivers/usb/gadget/acm_ms.c:43:
| f_mass_storage.c:2199:18: warning: comparison of unsigned expression >= 0 is always true  [-Wtautological-compare]
|         if (common->lun >= 0 && common->lun < common->nluns)
|             ~~~~~~~~~~~ ^  ~

common->lun is defined as "unsigned int" so its value is always >= 0.
It is assigned via cbw->Lun which is defined as u8 so it is also not
abused as -1.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
---
 drivers/usb/gadget/f_mass_storage.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/gadget/f_mass_storage.c b/drivers/usb/gadget/f_mass_storage.c
index 5d027b3..a87c1a1 100644
--- a/drivers/usb/gadget/f_mass_storage.c
+++ b/drivers/usb/gadget/f_mass_storage.c
@@ -2196,7 +2196,7 @@ static int received_cbw(struct fsg_dev *fsg, struct fsg_buffhd *bh)
 	if (common->data_size == 0)
 		common->data_dir = DATA_DIR_NONE;
 	common->lun = cbw->Lun;
-	if (common->lun >= 0 && common->lun < common->nluns)
+	if (common->lun < common->nluns)
 		common->curlun = &common->luns[common->lun];
 	else
 		common->curlun = NULL;
-- 
1.7.10.4

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