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drivers/usbdev/cdcacm.c: fix runtime error memcpy para is null

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usbdev/cdcacm.c:2974:3: runtime error: null pointer passed as argument 2, which is declared to never be null
    #0 0x44716307 in cdcuart_dmasend usbdev/cdcacm.c:2974

Signed-off-by: yangsong8 <yangsong8@xiaomi.com>
This commit is contained in:
yangsong8
2025-05-06 20:59:34 +08:00
committed by Xiang Xiao
parent dd5a2662ac
commit e78e152cc7
1 changed files with 6 additions and 2 deletions
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drivers/usbdev/cdcacm.c
+6 -2
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@@ -2982,8 +2982,12 @@ static void cdcuart_dmasend(FAR struct uart_dev_s *dev)
req->len = nbytes; req->len = nbytes;
nbytes = MIN(reqlen - nbytes, xfer->nlength); nbytes = MIN(reqlen - nbytes, xfer->nlength);
memcpy(req->buf + req->len, xfer->nbuffer, nbytes); if (nbytes)
req->len += nbytes; {
memcpy(req->buf + req->len, xfer->nbuffer, nbytes);
req->len += nbytes;
}
xfer->nbytes = req->len; xfer->nbytes = req->len;
uart_xmitchars_done(dev); uart_xmitchars_done(dev);