From 8113b89fc615cfb531df0334fb3a091cf6a45ce0 Mon Sep 17 00:00:00 2001
From: Stefan Wahren <stefan.wahren@i2se.com>
Date: Sat, 31 Mar 2018 22:09:37 +0200
Subject: [PATCH] staging: vchiq_core: Fix missing semaphore release in error case
Git-commit: 8113b89fc615cfb531df0334fb3a091cf6a45ce0
Patch-mainline: v4.18-rc1
References: FATE#324827
The bail out branch in case of a invalid tx_pos missed a semaphore
release. Dan Carpenter found this with a static checker.
Fixes: d1eab9dec610 ("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>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c
@@ -601,6 +601,7 @@ reserve_space(VCHIQ_STATE_T *state, size
}
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;
}