linux-kernel - [PATCH] rtc: remove VLA usage

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Message-ID: <20180307201133.GA5860@embeddedgus>
Date:   Wed, 7 Mar 2018 14:11:33 -0600
From:   "Gustavo A. R. Silva" <gustavo@...eddedor.com>
To:     Alessandro Zummo <a.zummo@...ertech.it>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>
Cc:     linux-rtc@...r.kernel.org, linux-kernel@...r.kernel.org,
        "Gustavo A. R. Silva" <garsilva@...eddedor.com>
Subject: [PATCH] rtc: remove VLA usage

In preparation to enabling -Wvla, remove VLA and replace it
with a fixed-length array instead.

Signed-off-by: Gustavo A. R. Silva <gustavo@...eddedor.com>
---
 drivers/rtc/rtc-bq32k.c  | 2 +-
 drivers/rtc/rtc-mcp795.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/rtc/rtc-bq32k.c b/drivers/rtc/rtc-bq32k.c
index e8698e9..e4b234a 100644
--- a/drivers/rtc/rtc-bq32k.c
+++ b/drivers/rtc/rtc-bq32k.c
@@ -74,7 +74,7 @@ static int bq32k_read(struct device *dev, void *data, uint8_t off, uint8_t len)
 static int bq32k_write(struct device *dev, void *data, uint8_t off, uint8_t len)
 {
 	struct i2c_client *client = to_i2c_client(dev);
-	uint8_t buffer[len + 1];
+	uint8_t buffer[256];
 
 	buffer[0] = off;
 	memcpy(&buffer[1], data, len);
diff --git a/drivers/rtc/rtc-mcp795.c b/drivers/rtc/rtc-mcp795.c
index 79e24ea..00e11c1 100644
--- a/drivers/rtc/rtc-mcp795.c
+++ b/drivers/rtc/rtc-mcp795.c
@@ -82,7 +82,7 @@ static int mcp795_rtcc_write(struct device *dev, u8 addr, u8 *data, u8 count)
 {
 	struct spi_device *spi = to_spi_device(dev);
 	int ret;
-	u8 tx[2 + count];
+	u8 tx[257];
 
 	tx[0] = MCP795_WRITE;
 	tx[1] = addr;
-- 
2.7.4