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From:   Sasha Levin <sashal@kernel.org>
To:     linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc:     Zhang Qilong <zhangqilong3@huawei.com>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Sasha Levin <sashal@kernel.org>, devel@driverdev.osuosl.org
Subject: [PATCH AUTOSEL 5.4 017/130] staging: rtl8192u: fix wrong judgement in rtl8192_rx_isr
Date:   Tue, 22 Dec 2020 21:16:20 -0500
Message-Id: <20201223021813.2791612-17-sashal@kernel.org>
In-Reply-To: <20201223021813.2791612-1-sashal@kernel.org>
References: <20201223021813.2791612-1-sashal@kernel.org>
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From: Zhang Qilong <zhangqilong3@huawei.com>

[ Upstream commit 071dc1787a2f8bb636f864c1f306280deea3b1d5 ]

The 'EPERM' cannot appear in the previous path, we
should use '-EPERM' to check it. For example:

Call trace:
->rtl8192_rx_isr
    ->usb_submit_urb
       ->usb_hcd_submit_urb
           ->rh_urb_enqueue
	       ->rh_queue_status
	           ->usb_hcd_link_urb_to_ep

Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com>
Link: https://lore.kernel.org/r/20201028122648.47959-1-zhangqilong3@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/staging/rtl8192u/r8192U_core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/rtl8192u/r8192U_core.c b/drivers/staging/rtl8192u/r8192U_core.c
index ddc09616248a5..56655a0b16906 100644
--- a/drivers/staging/rtl8192u/r8192U_core.c
+++ b/drivers/staging/rtl8192u/r8192U_core.c
@@ -883,7 +883,7 @@ static void rtl8192_rx_isr(struct urb *urb)
 	urb->context = skb;
 	skb_queue_tail(&priv->rx_queue, skb);
 	err = usb_submit_urb(urb, GFP_ATOMIC);
-	if (err && err != EPERM)
+	if (err && err != -EPERM)
 		netdev_err(dev,
 			   "can not submit rxurb, err is %x, URB status is %x\n",
 			   err, urb->status);
-- 
2.27.0