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Commit d1eab9de authored by Stefan Wahren's avatar Stefan Wahren Committed by Greg Kroah-Hartman
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staging: vchiq_core: Bail out in case of invalid tx_pos 



Properly handle the error case in case of an invalid tx_pos.

Signed-off-by: default avatarStefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 6f2370d2

drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c

+4 −2
Original line number Diff line number Diff line
@@ -600,8 +600,10 @@ reserve_space(VCHIQ_STATE_T *state, size_t space, int is_blocking) 
				return NULL; /* No space available */

		}



		BUG_ON(tx_pos ==

			(state->slot_queue_available * VCHIQ_SLOT_SIZE));

		if (tx_pos == (state->slot_queue_available * VCHIQ_SLOT_SIZE)) {

			pr_warn("%s: invalid tx_pos: %d\n", __func__, tx_pos);

			return NULL;

		}



		slot_index = local->slot_queue[

			SLOT_QUEUE_INDEX_FROM_POS(tx_pos) &