linux-kernel - [PATCH 4.16 195/272] soc: qcom: wcnss

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Date:   Mon, 28 May 2018 12:03:48 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Will Newton <will.newton@...il.com>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Andy Gross <andy.gross@...aro.org>,
        Sasha Levin <alexander.levin@...rosoft.com>
Subject: [PATCH 4.16 195/272] soc: qcom: wcnss_ctrl: Fix increment in NV upload

4.16-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Bjorn Andersson <bjorn.andersson@...aro.org>

[ Upstream commit 90c29ed7627b6b4aeb603ee197650173c8434512 ]

hdr.len includes both the size of the header and the fragment, so using
this when stepping through the firmware causes us to skip 16 bytes every
chunk of 3072 bytes; causing only the first fragment to actually be
valid data.

Instead use fragment size steps through the firmware blob.

Fixes: ea7a1f275cf0 ("soc: qcom: Introduce WCNSS_CTRL SMD client")
Reported-by: Will Newton <will.newton@...il.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>
Signed-off-by: Andy Gross <andy.gross@...aro.org>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/soc/qcom/wcnss_ctrl.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/soc/qcom/wcnss_ctrl.c
+++ b/drivers/soc/qcom/wcnss_ctrl.c
@@ -249,7 +249,7 @@ static int wcnss_download_nv(struct wcns
 		/* Increment for next fragment */
 		req->seq++;
 
-		data += req->hdr.len;
+		data += NV_FRAGMENT_SIZE;
 		left -= NV_FRAGMENT_SIZE;
 	} while (left > 0);