From 24349a90126cb1c082e34b9d8fc14a7c3e08be6a Mon Sep 17 00:00:00 2001
From: Jianqing Liu <me@pegasis.site>
Date: Sun, 13 Jul 2025 14:34:07 -0400
Subject: Fix CDC ACM BufferedReceiver buffer calculation

Co-authored-by: Ralph Ursprung <39383228+rursprung@users.noreply.github.com>
---
 embassy-usb/src/class/cdc_acm.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/embassy-usb/src/class/cdc_acm.rs b/embassy-usb/src/class/cdc_acm.rs
index a1144ce05..0a1a5e64f 100644
--- a/embassy-usb/src/class/cdc_acm.rs
+++ b/embassy-usb/src/class/cdc_acm.rs
@@ -501,7 +501,7 @@ impl<'d, D: Driver<'d>> BufferedReceiver<'d, D> {
     fn read_from_buffer(&mut self, buf: &mut [u8]) -> usize {
         let available = &self.buffer[self.start..self.end];
         let len = core::cmp::min(available.len(), buf.len());
-        buf[..len].copy_from_slice(&self.buffer[..len]);
+        buf[..len].copy_from_slice(&available[..len]);
         self.start += len;
         len
     }
-- 
cgit