linux-kernel - [PATCH 4.18 070/135] ASoC: sigmadsp: safeload should not have lower byte limit

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Message-Id: <20181016170519.563174456@linuxfoundation.org>
Date:   Tue, 16 Oct 2018 19:05:00 +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, Danny Smith <dannys@...s.com>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Mark Brown <broonie@...nel.org>,
        Sasha Levin <alexander.levin@...rosoft.com>
Subject: [PATCH 4.18 070/135] ASoC: sigmadsp: safeload should not have lower byte limit

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

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

From: Danny Smith <danny.smith@...s.com>

[ Upstream commit 5ea752c6efdf5aa8a57aed816d453a8f479f1b0a ]

Fixed range in safeload conditional to allow safeload to up to 20 bytes,
without a lower limit.

Signed-off-by: Danny Smith <dannys@...s.com>
Acked-by: Lars-Peter Clausen <lars@...afoo.de>
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 sound/soc/codecs/sigmadsp.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--- a/sound/soc/codecs/sigmadsp.c
+++ b/sound/soc/codecs/sigmadsp.c
@@ -117,8 +117,7 @@ static int sigmadsp_ctrl_write(struct si
 	struct sigmadsp_control *ctrl, void *data)
 {
 	/* safeload loads up to 20 bytes in a atomic operation */
-	if (ctrl->num_bytes > 4 && ctrl->num_bytes <= 20 && sigmadsp->ops &&
-	    sigmadsp->ops->safeload)
+	if (ctrl->num_bytes <= 20 && sigmadsp->ops && sigmadsp->ops->safeload)
 		return sigmadsp->ops->safeload(sigmadsp, ctrl->addr, data,
 			ctrl->num_bytes);
 	else