From 78189dfb6b740965c91bb363a4ae14353a0ae7e5 Mon Sep 17 00:00:00 2001
From: tangyuxin <462747508@qq.com>
Date: Sat, 21 Jul 2018 16:29:15 +0800
Subject: [PATCH] =?UTF-8?q?[components][drivers][sdio]=E4=BF=AE=E5=A4=8D?=
 =?UTF-8?q?=E6=B2=A1=E6=9C=89=E6=B3=A8=E5=86=8CSDIO=E4=B8=AD=E6=96=AD?=
 =?UTF-8?q?=E5=AF=BC=E8=87=B4=E6=96=AD=E8=A8=80=E7=9A=84=E9=97=AE=E9=A2=98?=
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---
 components/drivers/sdio/sdio.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/components/drivers/sdio/sdio.c b/components/drivers/sdio/sdio.c
index dc0cd1eb9..b105e6510 100644
--- a/components/drivers/sdio/sdio.c
+++ b/components/drivers/sdio/sdio.c
@@ -1171,7 +1171,8 @@ void sdio_irq_wakeup(struct rt_mmcsd_host *host)
 {
     if (host->flags & MMCSD_SUP_SDIO_IRQ)
         host->ops->enable_sdio_irq(host, 0);
-    rt_sem_release(host->sdio_irq_sem);
+    if (host->sdio_irq_sem)
+        rt_sem_release(host->sdio_irq_sem);
 }
 
 rt_int32_t sdio_enable_func(struct rt_sdio_function *func)
-- 
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