From 4286caccf3f7a70bafa29eab4f326093442eab2c Mon Sep 17 00:00:00 2001
From: Fovery <5240056+fovery@user.noreply.gitee.com>
Date: Fri, 11 Sep 2020 16:04:01 +0800
Subject: [PATCH] =?UTF-8?q?1=E3=80=81=E5=85=B3=E9=97=ADcan=E8=AE=BE?=
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---
 components/drivers/can/can.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/components/drivers/can/can.c b/components/drivers/can/can.c
index 3d60dbaa55..0fa01e3a07 100644
--- a/components/drivers/can/can.c
+++ b/components/drivers/can/can.c
@@ -422,6 +422,7 @@ static rt_err_t rt_can_close(struct rt_device *dev)
         tx_fifo = (struct rt_can_tx_fifo *)can->can_tx;
         RT_ASSERT(tx_fifo != RT_NULL);
 
+        rt_sem_detach(&tx_fifo->sem);
         rt_free(tx_fifo);
         dev->open_flag &= ~RT_DEVICE_FLAG_INT_TX;
         can->can_tx = RT_NULL;
-- 
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