From patchwork Mon Mar 17 07:00:15 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jiri Slaby X-Patchwork-Id: 874334 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 1B3F915E5C2; Mon, 17 Mar 2025 07:00:49 +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=1742194850; cv=none; b=LK6o8XFY7g2l6YelOVEXRXj4fcXxRXuN0Jh2CAk6n963cQ4a6nuXDMeR4c1KnWJ4GHYQJA0J4rwHBB2xu1M0jNtMPum4za1YdX+jnYH4+B1uz3Xud8XSXmKSNoFSQBDJTMacE/+YdhSMfYqxBgts6SlTLqtchdg2Ur0GRwQZhks= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742194850; c=relaxed/simple; bh=3xlgiwnCx9ACqoF762hkPvtcJJShUF6Q9QE5Xiop/BA=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version:Content-Type; b=HgIFmzydZvLRmQJBfoRMDzZqQJUCDoD/OrFSgOBLk6HXpKX4JSN4G3ygM5u3tJkrxQHj0S6MmnVdWeb+q16lhQY4h9nP6vRZhtjmcbQiwUbRYeL13lnJApGbj3cjSkgBRv63gnXoB9b1WHT1wAx1ew2RYHDEATuQswT9tGeF1N0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ruVum5IF; 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="ruVum5IF" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7DE0FC4CEE3; Mon, 17 Mar 2025 07:00:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1742194849; bh=3xlgiwnCx9ACqoF762hkPvtcJJShUF6Q9QE5Xiop/BA=; h=From:To:Cc:Subject:Date:From; b=ruVum5IFQsLcoPcsC+Tf2/lLCMEwjDxCzLvalVqmJ29KImQKd9VQcT+DUPhylQtG8 bIlBaEWUi8digtTuWRyNLRC1cMSQ+mm0Nsm++O0eMdJfsmidlt2931CrCtbF6/gyL5 1Y0UEj6VL91gzW184aODCmCWqJtpfPhtQwgd2jQXwhKJXDLeXIPVWn7oSdzF+RL4AI fj5+rEkZkI07H7eELkOaDje3VWiELHpwJtuo+6jMYAF573GkI/lKfRloKz77zykeVg 28MGg8SyhLx5xIpvrh3sMxhyyBLRj5M0JJnzU0OF8Mq5AO2JxIA5cC+96cVURiKCpU IG+h2o4eF8yFQ== From: "Jiri Slaby (SUSE)" To: gregkh@linuxfoundation.org Cc: linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org, "Jiri Slaby (SUSE)" Subject: [PATCH v2 00/31] tty: cleanup no. 99 Date: Mon, 17 Mar 2025 08:00:15 +0100 Message-ID: <20250317070046.24386-1-jirislaby@kernel.org> X-Mailer: git-send-email 2.49.0 Precedence: bulk X-Mailing-List: linux-serial@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Hi, this is (again) a series of cleanup in tty. I am trying to rework tty+serial to avoid limitations of devices (so called NR_UART or tty_alloc_driver()'s first parameter). And the below popped up while crawling through the code. So this is only a prep cleanup. * many tty flags are now enums * many functions were improved for readability * quite a few unused or old code dropped In particular, the runtime behaviour of the kernel before and after the changes is supposed to be bug to bug compatible (except moxa's ioctl and ISA evils dropped). That is, noone should notice. [v2] * use serial_port_in/out() helpers in 26/30 (and not use serial_in/out()) * the last patch is new Jiri Slaby (SUSE) (31): tty: convert "TTY Struct Flags" to an enum tty: audit: do not use N_TTY_BUF_SIZE tty: caif: do not use N_TTY_BUF_SIZE tty: move N_TTY_BUF_SIZE to n_tty tty: n_tty: use uint for space returned by tty_write_room() tty: n_tty: simplify process_output() tty: n_tty: clean up process_output_block() tty: n_tty: drop n_tty_trace() tty: n_tty: extract n_tty_continue_cookie() from n_tty_read() tty: n_tty: extract n_tty_wait_for_input() tty: n_tty: move more_to_be_read to the end of n_tty_read() tty: tty_driver: move TTY macros to the top tty: tty_driver: convert "TTY Driver Flags" to an enum tty: tty_driver: document both {,__}tty_alloc_driver() properly tty: tty_driver: introduce TTY driver sub/types enums tty: serdev: drop serdev_controller_ops::write_room() tty: mmc: sdio: use bool for cts and remove parentheses tty: moxa: drop version dump to logs tty: moxa: drop ISA support tty: moxa: carve out special ioctls and extra tty_port tty: srmcons: fix retval from srmcons_init() tty: staging/greybus: pass tty_driver flags to tty_alloc_driver() tty: sunsu: drop serial_{in,out}p() tty: sunsu: remove unused serial_icr_read() serial: remove redundant tty_port_link_device() serial: pass struct uart_state to uart_line_info() serial: 8250: use serial_port_in/out() helpers serial: 8250_rsa: simplify rsa8250_{request/release}_resource() serial: 8250_port: do not use goto for UPQ_NO_TXEN_TEST code flow serial: 8250_port: simplify serial8250_request_std_resource() serial: switch change_irq and change_port to bool in uart_set_info() Documentation/driver-api/tty/tty_driver.rst | 4 +- Documentation/driver-api/tty/tty_struct.rst | 2 +- arch/alpha/kernel/srmcons.c | 62 ++--- drivers/mmc/core/sdio_uart.c | 2 +- drivers/net/caif/caif_serial.c | 2 +- drivers/staging/greybus/uart.c | 4 +- drivers/tty/Kconfig | 2 +- drivers/tty/moxa.c | 251 +------------------- drivers/tty/n_tty.c | 212 ++++++++--------- drivers/tty/serdev/core.c | 11 - drivers/tty/serdev/serdev-ttyport.c | 9 - drivers/tty/serial/8250/8250_dw.c | 16 +- drivers/tty/serial/8250/8250_fsl.c | 8 +- drivers/tty/serial/8250/8250_omap.c | 2 +- drivers/tty/serial/8250/8250_port.c | 59 ++--- drivers/tty/serial/8250/8250_rsa.c | 21 +- drivers/tty/serial/serial_core.c | 10 +- drivers/tty/serial/sunsu.c | 178 ++++++-------- drivers/tty/tty_audit.c | 10 +- drivers/tty/tty_io.c | 8 +- include/linux/serdev.h | 6 - include/linux/tty.h | 53 +++-- include/linux/tty_driver.h | 180 +++++++------- 23 files changed, 412 insertions(+), 700 deletions(-)