From patchwork Sun Aug 27 07:41:45 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jiri Slaby X-Patchwork-Id: 718550 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 34F10C83F18 for ; Sun, 27 Aug 2023 07:44:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230127AbjH0Hni (ORCPT ); Sun, 27 Aug 2023 03:43:38 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49390 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230089AbjH0HmM (ORCPT ); Sun, 27 Aug 2023 03:42:12 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AD8BCFA; Sun, 27 Aug 2023 00:42:09 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 43C4260FC9; Sun, 27 Aug 2023 07:42:09 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id A1764C433C8; Sun, 27 Aug 2023 07:42:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1693122128; bh=I7T8JzUTvFtmo5xlDYAkNBZGkmHty16AkdRBOY1GVgU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=QSiV2OusxS+1LP/ke2ER4BXxgUfA9AS8ibKGapUCWxc09FyhVdx4pfCkoqNJDbku2 vqYrbcyyUWf8O/sL9tmwS5fmaN5SbWaImRWCx/fkRasROyl8kOAAEufcHZpW1c8sp9 MfRo2CTjF+m+/JdOmzWjJLdp4jEfLV6X0Wyx3Q6hqhkfwv5X5rCsdc2epDiECmVqFU LrTDO96E6gxHQ/qcKw9Zvw/eTFvH77rCgzc0xWEREjaRe2sGUo482/YAx/zOf/3ng2 l8Ek2FOvSkT2YsahiXimvJ652TtU+V4eSo76DHSovrSH/FpLz7JsZEauVMOB3PVp4V cBI789+mx2+FA== 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 12/14] tty: n_tty: unify counts to size_t Date: Sun, 27 Aug 2023 09:41:45 +0200 Message-ID: <20230827074147.2287-13-jirislaby@kernel.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20230827074147.2287-1-jirislaby@kernel.org> References: <20230827074147.2287-1-jirislaby@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-serial@vger.kernel.org Some count types are already 'size_t' for a long time. Some were switched to 'size_t' recently. Unify the rest with those now. This allows for some min_t()s to become min()s. And make one min() an explicit min_t() as we are comparing signed 'room' to unsigned 'count'. Signed-off-by: Jiri Slaby (SUSE) --- drivers/tty/n_tty.c | 32 +++++++++++++++----------------- 1 file changed, 15 insertions(+), 17 deletions(-) diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c index cf42b8b4ad2e..bd6cd28f734f 100644 --- a/drivers/tty/n_tty.c +++ b/drivers/tty/n_tty.c @@ -1523,27 +1523,27 @@ static void n_tty_lookahead_flow_ctrl(struct tty_struct *tty, const u8 *cp, static void n_tty_receive_buf_real_raw(const struct tty_struct *tty, const u8 *cp, - int count) + size_t count) { struct n_tty_data *ldata = tty->disc_data; size_t n, head; head = MASK(ldata->read_head); - n = min_t(size_t, count, N_TTY_BUF_SIZE - head); + n = min(count, N_TTY_BUF_SIZE - head); memcpy(read_buf_addr(ldata, head), cp, n); ldata->read_head += n; cp += n; count -= n; head = MASK(ldata->read_head); - n = min_t(size_t, count, N_TTY_BUF_SIZE - head); + n = min(count, N_TTY_BUF_SIZE - head); memcpy(read_buf_addr(ldata, head), cp, n); ldata->read_head += n; } static void n_tty_receive_buf_raw(struct tty_struct *tty, const u8 *cp, const u8 *fp, - int count) + size_t count) { struct n_tty_data *ldata = tty->disc_data; u8 flag = TTY_NORMAL; @@ -1560,7 +1560,7 @@ n_tty_receive_buf_raw(struct tty_struct *tty, const u8 *cp, const u8 *fp, static void n_tty_receive_buf_closing(struct tty_struct *tty, const u8 *cp, const u8 *fp, - int count, bool lookahead_done) + size_t count, bool lookahead_done) { u8 flag = TTY_NORMAL; @@ -1573,7 +1573,7 @@ n_tty_receive_buf_closing(struct tty_struct *tty, const u8 *cp, const u8 *fp, } static void n_tty_receive_buf_standard(struct tty_struct *tty, const u8 *cp, - const u8 *fp, int count, + const u8 *fp, size_t count, bool lookahead_done) { struct n_tty_data *ldata = tty->disc_data; @@ -1612,11 +1612,11 @@ static void n_tty_receive_buf_standard(struct tty_struct *tty, const u8 *cp, } static void __receive_buf(struct tty_struct *tty, const u8 *cp, const u8 *fp, - int count) + size_t count) { struct n_tty_data *ldata = tty->disc_data; bool preops = I_ISTRIP(tty) || (I_IUCLC(tty) && L_IEXTEN(tty)); - size_t la_count = min_t(size_t, ldata->lookahead_count, count); + size_t la_count = min(ldata->lookahead_count, count); if (ldata->real_raw) n_tty_receive_buf_real_raw(tty, cp, count); @@ -1687,11 +1687,11 @@ static void __receive_buf(struct tty_struct *tty, const u8 *cp, const u8 *fp, */ static size_t n_tty_receive_buf_common(struct tty_struct *tty, const u8 *cp, const u8 *fp, - int count, bool flow) + size_t count, bool flow) { struct n_tty_data *ldata = tty->disc_data; - size_t rcvd = 0; - int room, n, overflow; + size_t n, rcvd = 0; + int room, overflow; down_read(&tty->termios_rwsem); @@ -1724,7 +1724,7 @@ n_tty_receive_buf_common(struct tty_struct *tty, const u8 *cp, const u8 *fp, } else overflow = 0; - n = min(count, room); + n = min_t(size_t, count, room); if (!n) break; @@ -1954,9 +1954,8 @@ static inline int input_available_p(const struct tty_struct *tty, int poll) * caller holds non-exclusive %termios_rwsem; * read_tail published */ -static bool copy_from_read_buf(const struct tty_struct *tty, - u8 **kbp, - size_t *nr) +static bool copy_from_read_buf(const struct tty_struct *tty, u8 **kbp, + size_t *nr) { struct n_tty_data *ldata = tty->disc_data; @@ -2009,8 +2008,7 @@ static bool copy_from_read_buf(const struct tty_struct *tty, * caller holds non-exclusive %termios_rwsem; * read_tail published */ -static bool canon_copy_from_read_buf(const struct tty_struct *tty, - u8 **kbp, +static bool canon_copy_from_read_buf(const struct tty_struct *tty, u8 **kbp, size_t *nr) { struct n_tty_data *ldata = tty->disc_data;