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staging: vchiq_core: Fix missing semaphore release in error case

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The bail out branch in case of a invalid tx_pos missed a semaphore
release. Dan Carpenter found this with a static checker.

Fixes: d1eab9dec6 ("staging: vchiq_core: Bail out in case of invalid tx_pos")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Stefan Wahren 2018-03-31 22:09:37 +02:00 • committed by Greg Kroah-Hartman
commit 8113b89fc6
1 changed files with 1 additions and 0 deletions
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1
drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c
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@ -601,6 +601,7 @@ reserve_space(VCHIQ_STATE_T *state, size_t space, int is_blocking)
}
if (tx_pos == (state->slot_queue_available * VCHIQ_SLOT_SIZE)) {
up(&state->slot_available_event);
pr_warn("%s: invalid tx_pos: %d\n", __func__, tx_pos);
return NULL;
}