linux-kernel - [PATCH v3 08/18] media: siano: Use flex arrays for sms

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Message-Id: <20240527-cocci-flexarray-v3-8-cda09c535816@chromium.org>
Date: Mon, 27 May 2024 21:08:58 +0000
From: Ricardo Ribalda <ribalda@...omium.org>
To: Michael Tretter <m.tretter@...gutronix.de>, 
 Pengutronix Kernel Team <kernel@...gutronix.de>, 
 Mauro Carvalho Chehab <mchehab@...nel.org>, 
 Laurent Pinchart <laurent.pinchart@...asonboard.com>, 
 Michal Simek <michal.simek@....com>, Andy Walls <awalls@...metrocast.net>, 
 Stanimir Varbanov <stanimir.k.varbanov@...il.com>, 
 Vikash Garodia <quic_vgarodia@...cinc.com>, 
 Bryan O'Donoghue <bryan.odonoghue@...aro.org>, 
 Bjorn Andersson <andersson@...nel.org>, 
 Konrad Dybcio <konrad.dybcio@...aro.org>
Cc: linux-media@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-arm-kernel@...ts.infradead.org, linux-arm-msm@...r.kernel.org, 
 Hans Verkuil <hverkuil-cisco@...all.nl>, 
 Ricardo Ribalda <ribalda@...omium.org>
Subject: [PATCH v3 08/18] media: siano: Use flex arrays for sms_firmware

Replace old style single array member, with flex array.

The struct is allocated, but it seems like there was an over allocation
error:

fw_buf = kmalloc(ALIGN(fw->size + sizeof(struct sms_firmware),
		SMS_ALLOC_ALIGNMENT), GFP_KERNEL | coredev->gfp_buf_flags);

This change fixes this cocci warning:
drivers/media/common/siano/smscoreapi.h:669:6-13: WARNING use flexible-array member instead (https://www.kernel.org/doc/html/latest/process/deprecated.html#zero-length-and-one-element-arrays)

Signed-off-by: Ricardo Ribalda <ribalda@...omium.org>
---
 drivers/media/common/siano/smscoreapi.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/media/common/siano/smscoreapi.h b/drivers/media/common/siano/smscoreapi.h
index bc61bc8b9ea9..82d9f8a64d99 100644
--- a/drivers/media/common/siano/smscoreapi.h
+++ b/drivers/media/common/siano/smscoreapi.h
@@ -666,7 +666,7 @@ struct sms_firmware {
 	u32			check_sum;
 	u32			length;
 	u32			start_address;
-	u8			payload[1];
+	u8			payload[];
 };
 
 /* statistics information returned as response for

-- 
2.45.1.288.g0e0cd299f1-goog