[PATCH] bus: mhi: ep: Fix off by one in mhi_ep_process_cmd_ring()

[Dan Carpenter <error27@gmail.com>]

The > comparison should be changed to >= to prevent an out of bounds
access into the mhi_cntrl->mhi_chan[] array.  The mhi_cntrl->mhi_chan[]
array is allocated in mhi_ep_chan_init() and has mhi_cntrl->max_chan
elements.

Fixes: 2527ad44ddb2 ("bus: mhi: ep: Check if the channel is supported by the controller")
Signed-off-by: Dan Carpenter <error27@gmail.com>
---
 drivers/bus/mhi/ep/main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/bus/mhi/ep/main.c b/drivers/bus/mhi/ep/main.c
index bcaaba97ef63..be2d56e7f392 100644
--- a/drivers/bus/mhi/ep/main.c
+++ b/drivers/bus/mhi/ep/main.c
@@ -125,7 +125,7 @@ static int mhi_ep_process_cmd_ring(struct mhi_ep_ring *ring, struct mhi_ring_ele
 	ch_id = MHI_TRE_GET_CMD_CHID(el);
 
 	/* Check if the channel is supported by the controller */
-	if ((ch_id > mhi_cntrl->max_chan) || !mhi_cntrl->mhi_chan[ch_id].name) {
+	if ((ch_id >= mhi_cntrl->max_chan) || !mhi_cntrl->mhi_chan[ch_id].name) {
 		dev_err(dev, "Channel (%u) not supported!\n", ch_id);
 		return -ENODEV;
 	}
-- 
2.35.1