linux-kernel - [next, PATCH 4/6] usb: mtu3: avoid sleep in atomic context when enter test mode

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Date:   Wed, 23 May 2018 16:53:18 +0800
From:   Chunfeng Yun <chunfeng.yun@...iatek.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Felipe Balbi <felipe.balbi@...ux.intel.com>
CC:     Matthias Brugger <matthias.bgg@...il.com>,
        Chunfeng Yun <chunfeng.yun@...iatek.com>,
        <linux-usb@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>
Subject: [next, PATCH 4/6] usb: mtu3: avoid sleep in atomic context when enter test mode

Use readl_poll_timeout_atomic() instead of readl_poll_timeout()
in atomic context

Signed-off-by: Chunfeng Yun <chunfeng.yun@...iatek.com>
---
 drivers/usb/mtu3/mtu3_gadget_ep0.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/mtu3/mtu3_gadget_ep0.c b/drivers/usb/mtu3/mtu3_gadget_ep0.c
index 0d2b1cf..25216e7 100644
--- a/drivers/usb/mtu3/mtu3_gadget_ep0.c
+++ b/drivers/usb/mtu3/mtu3_gadget_ep0.c
@@ -299,7 +299,7 @@ static int handle_test_mode(struct mtu3 *mtu, struct usb_ctrlrequest *setup)
 	mtu3_writel(mbase, U3D_EP0CSR, value | EP0_SETUPPKTRDY | EP0_DATAEND);
 
 	/* wait for ACK status sent by host */
-	readl_poll_timeout(mbase + U3D_EP0CSR, value,
+	readl_poll_timeout_atomic(mbase + U3D_EP0CSR, value,
 			!(value & EP0_DATAEND), 100, 5000);
 
 	mtu3_writel(mbase, U3D_USB2_TEST_MODE, mtu->test_mode_nr);
-- 
1.9.1