From 4240e067a91d168dc85fce74ef53f641a13b2f81 Mon Sep 17 00:00:00 2001
From: Yaroslav Chvanov <yaroslav.chvanov@gmail.com>
Date: Sat, 20 May 2023 10:57:00 +0300
Subject: [PATCH] openinput: return early instead of making an error-prone
 zero-sized VLA

Fixes a clang-analyze warning.
---
 src/driver-openinput.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/driver-openinput.c b/src/driver-openinput.c
index ad002866..1e330db1 100644
--- a/src/driver-openinput.c
+++ b/src/driver-openinput.c
@@ -386,6 +386,11 @@ openinput_read_supported_function_pages(struct ratbag_device *device)
 		return ret;
 
 	total = count + left;
+	if (total == 0) {
+		log_debug(ratbag,
+			  "openinput: not proceeding to read device functions as there are 0 pages\n");
+		return 0;
+	}
 	uint8_t pages[total];
 
 	memcpy(pages, buffer, count);