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spi: axi-spi-engine: use struct_size() macro

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This makes use of the struct_size() macro to calculate the size of the
struct axi_spi_engine when allocating it.

Suggested-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David Lechner <dlechner@baylibre.com>
Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Link: https://msgid.link/r/20240304-mainline-axi-spi-engine-small-cleanups-v2-3-5b14ed729a31@baylibre.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
David Lechner 2024-03-04 10:04:25 -06:00 committed by Mark Brown
parent c8340ac101
commit 5c70854130
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GPG Key ID: 24D68B725D5487D0
1 changed files with 2 additions and 3 deletions
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5
drivers/spi/spi-axi-spi-engine.c
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@ -12,6 +12,7 @@
#include <linux/io.h>
#include <linux/of.h>
#include <linux/module.h>
#include <linux/overflow.h>
#include <linux/platform_device.h>
#include <linux/spi/spi.h>
@ -502,15 +503,13 @@ static irqreturn_t spi_engine_irq(int irq, void *devid)
static int spi_engine_optimize_message(struct spi_message *msg)
{
struct spi_engine_program p_dry, *p;
size_t size;
spi_engine_precompile_message(msg);
p_dry.length = 0;
spi_engine_compile_message(msg, true, &p_dry);
size = sizeof(*p->instructions) * (p_dry.length + 1);
p = kzalloc(sizeof(*p) + size, GFP_KERNEL);
p = kzalloc(struct_size(p, instructions, p_dry.length + 1), GFP_KERNEL);
if (!p)
return -ENOMEM;