From patchwork Thu Aug 8 10:35:40 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Jiri Slaby \(SUSE\)" X-Patchwork-Id: 818015 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C3E9B18C357; Thu, 8 Aug 2024 10:36:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723113361; cv=none; b=hIQrHrtw3IAUhomVbNtj+pOPRThrKspkYJTPwDHZePYUcsvQ6Dq7Oj+UApL1kR2JPy5HfVZMpPT+ajIey6ynBrXvlZxn1f4w0pVshQ9+XGYz2UOeE0XPKmk0EAlOuN4hqrQ7vSjlrRiLPUmHUhji4K6G0RKpOMxPSGOSuCG7YJY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723113361; c=relaxed/simple; bh=X6/kBkEjHc/F/C9MNeI0wvDAMhnS3BamehrQ2Uf7rmc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=P9bUk1DEAjWG5c3xcloMB9HGBfgFAj5JwfO5FtEitSTQ6HPXMIS0gex0PFYcpzlYBoTxQHZns6RqlDZLro39GwyLeewS+zbqOToNscAEVbYQbwL1ipEp1PIFl6yxIUzCdMPIjC0952VZ0aGNXTGeDzY3DRkYrbVznnnWsGwfQ/s= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Vv4c3W8q; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Vv4c3W8q" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E6C86C4AF0E; Thu, 8 Aug 2024 10:35:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1723113361; bh=X6/kBkEjHc/F/C9MNeI0wvDAMhnS3BamehrQ2Uf7rmc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Vv4c3W8qupRyUobgJwFY3BT22gSLSqhPfOrh2ezWbFsDrEI1lE4kp/dfvGtYjpzA7 MGNQaqKDJPTCgLZzXCjlkxDTvIJ9C9i9fENgJuQWCqxTqHWGxx2/j1XP3mb4uXHY7C utG//gZCJ8l7/+bTqFk09SiD3s0hEBCPUir07Ne1CpreO5r4FvuS43DJtx4IpDcKQ3 aWq3qgK/kaWeBxtBV6txESoXabdpxDJiOpFG3b+EbFiP2URVKzUJkR6j3jgdHDMM0K msO74UzQSjicHK8TjDQrbWo5gggEGQmJm4WK3uTnxLv64bw51EQymlBK/WGjoPxpkS aAA274cMhWrfw== From: "Jiri Slaby (SUSE)" To: gregkh@linuxfoundation.org Cc: linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org, "Jiri Slaby (SUSE)" , Mathias Nyman , linux-usb@vger.kernel.org Subject: [PATCH v2 04/11] xhci: dbgtty: remove kfifo_out() wrapper Date: Thu, 8 Aug 2024 12:35:40 +0200 Message-ID: <20240808103549.429349-5-jirislaby@kernel.org> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240808103549.429349-1-jirislaby@kernel.org> References: <20240808103549.429349-1-jirislaby@kernel.org> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 There is no need to check against kfifo_len() before kfifo_out(). Just ask the latter for data and it tells how much it retrieved. Or returns 0 in case there are no more. Signed-off-by: Jiri Slaby (SUSE) Cc: Mathias Nyman Cc: Greg Kroah-Hartman Cc: linux-usb@vger.kernel.org --- drivers/usb/host/xhci-dbgtty.c | 15 +-------------- 1 file changed, 1 insertion(+), 14 deletions(-) diff --git a/drivers/usb/host/xhci-dbgtty.c b/drivers/usb/host/xhci-dbgtty.c index b74e98e94393..64ea96494997 100644 --- a/drivers/usb/host/xhci-dbgtty.c +++ b/drivers/usb/host/xhci-dbgtty.c @@ -24,19 +24,6 @@ static inline struct dbc_port *dbc_to_port(struct xhci_dbc *dbc) return dbc->priv; } -static unsigned int -dbc_send_packet(struct dbc_port *port, char *packet, unsigned int size) -{ - unsigned int len; - - len = kfifo_len(&port->write_fifo); - if (len < size) - size = len; - if (size != 0) - size = kfifo_out(&port->write_fifo, packet, size); - return size; -} - static int dbc_start_tx(struct dbc_port *port) __releases(&port->port_lock) __acquires(&port->port_lock) @@ -49,7 +36,7 @@ static int dbc_start_tx(struct dbc_port *port) while (!list_empty(pool)) { req = list_entry(pool->next, struct dbc_request, list_pool); - len = dbc_send_packet(port, req->buf, DBC_MAX_PACKET); + len = kfifo_out(&port->write_fifo, req->buf, DBC_MAX_PACKET); if (len == 0) break; do_tty_wake = true;