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39 lines
1.4 KiB
Diff
39 lines
1.4 KiB
Diff
From d3d636627c8bb57a64bfadcc5d282c35d152f563 Mon Sep 17 00:00:00 2001
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From: Mayank Rana <mrana@codeaurora.org>
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Date: Thu, 28 Aug 2014 15:11:44 -0700
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Subject: [PATCH] f_qc_rndis: Check config or cdev is NULL in before accessing
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RNDIS control path completion handlers are getting called during
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disconnect as part of composition switch and this is leading to a
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crash. Avoid this crash, by checking, if cdev is not NULL before
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accessing.
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CRs-Fixed: 717035
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Bug: 35136547
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Change-Id: Id8748f963298129a403ffd6e4413476013315061
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Signed-off-by: Mayank Rana <mrana@codeaurora.org>
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---
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drivers/usb/gadget/f_qc_rndis.c | 9 ++++++++-
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1 file changed, 8 insertions(+), 1 deletion(-)
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diff --git a/drivers/usb/gadget/f_qc_rndis.c b/drivers/usb/gadget/f_qc_rndis.c
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index 3bccfe8fc5a76..dfa3dd6ed18dd 100644
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--- a/drivers/usb/gadget/f_qc_rndis.c
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+++ b/drivers/usb/gadget/f_qc_rndis.c
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@@ -552,7 +552,14 @@ static void rndis_qc_response_complete(struct usb_ep *ep,
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{
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struct f_rndis_qc *rndis = req->context;
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int status = req->status;
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- struct usb_composite_dev *cdev = rndis->port.func.config->cdev;
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+ struct usb_composite_dev *cdev;
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+
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+ if (!rndis->port.func.config || !rndis->port.func.config->cdev) {
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+ pr_err("%s(): cdev or config is NULL.\n", __func__);
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+ return;
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+ } else {
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+ cdev = rndis->port.func.config->cdev;
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+ }
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/* after TX:
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* - USB_CDC_GET_ENCAPSULATED_RESPONSE (ep0/control)
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