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Date: Wed, 26 Jun 2019 20:35:23 -0400 From: Sasha Levin <sashal@...nel.org> To: linux-kernel@...r.kernel.org, stable@...r.kernel.org Cc: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>, Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>, Vinod Koul <vkoul@...nel.org>, Sasha Levin <sashal@...nel.org> Subject: [PATCH AUTOSEL 4.19 08/60] soundwire: stream: fix out of boundary access on port properties From: Srinivas Kandagatla <srinivas.kandagatla@...aro.org> [ Upstream commit 03ecad90d3798be11b033248bbd4bbff4425a1c7 ] Assigning local iterator to array element and using it again for indexing would cross the array boundary. Fix this by directly referring array element without using the local variable. Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org> Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com> Signed-off-by: Vinod Koul <vkoul@...nel.org> Signed-off-by: Sasha Levin <sashal@...nel.org> --- drivers/soundwire/stream.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/soundwire/stream.c b/drivers/soundwire/stream.c index e5c7e1ef6318..907a548645b7 100644 --- a/drivers/soundwire/stream.c +++ b/drivers/soundwire/stream.c @@ -1236,9 +1236,7 @@ struct sdw_dpn_prop *sdw_get_slave_dpn_prop(struct sdw_slave *slave, } for (i = 0; i < num_ports; i++) { - dpn_prop = &dpn_prop[i]; - - if (dpn_prop->num == port_num) + if (dpn_prop[i].num == port_num) return &dpn_prop[i]; } -- 2.20.1
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