linux-kernel - [PATCH] clk: zynqmp: Fix memory allocation in zynqmp_clk

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Date:   Sun, 23 Dec 2018 23:50:58 -0600
From:   "Gustavo A. R. Silva" <gustavo@...eddedor.com>
To:     Jolly Shah <jolly.shah@...inx.com>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Michal Simek <michal.simek@...inx.com>
Cc:     linux-clk@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org,
        "Gustavo A. R. Silva" <gustavo@...eddedor.com>
Subject: [PATCH] clk: zynqmp: Fix memory allocation in zynqmp_clk_setup

Fix memory allocation and use struct_size() in kzalloc().

Fixes: 3fde0e16d016 ("drivers: clk: Add ZynqMP clock driver")
Cc: stable@...r.kernel.org
Signed-off-by: Gustavo A. R. Silva <gustavo@...eddedor.com>
---
 drivers/clk/zynqmp/clkc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/clk/zynqmp/clkc.c b/drivers/clk/zynqmp/clkc.c
index f65cc0ff76ab..b0908ec62f73 100644
--- a/drivers/clk/zynqmp/clkc.c
+++ b/drivers/clk/zynqmp/clkc.c
@@ -669,8 +669,8 @@ static int zynqmp_clk_setup(struct device_node *np)
 	if (ret)
 		return ret;
 
-	zynqmp_data = kzalloc(sizeof(*zynqmp_data) + sizeof(*zynqmp_data) *
-						clock_max_idx, GFP_KERNEL);
+	zynqmp_data = kzalloc(struct_size(zynqmp_data, hws, clock_max_idx),
+			      GFP_KERNEL);
 	if (!zynqmp_data)
 		return -ENOMEM;
 
-- 
2.17.0