Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755345Ab3DOPho (ORCPT ); Mon, 15 Apr 2013 11:37:44 -0400 Received: from mailout02.c08.mtsvc.net ([205.186.168.190]:45941 "EHLO mailout02.c08.mtsvc.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933323Ab3DOPdB (ORCPT ); Mon, 15 Apr 2013 11:33:01 -0400 From: Peter Hurley To: Greg Kroah-Hartman , linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Jiri Slaby , Peter Hurley Subject: [PATCH v3 17/24] n_tty: Don't wait for buffer work in read() loop Date: Mon, 15 Apr 2013 11:19:21 -0400 Message-Id: <1366039168-8510-18-git-send-email-peter@hurleysoftware.com> X-Mailer: git-send-email 1.8.1.2 In-Reply-To: <1366039168-8510-1-git-send-email-peter@hurleysoftware.com> References: <1363724513-15604-1-git-send-email-peter@hurleysoftware.com> <1366039168-8510-1-git-send-email-peter@hurleysoftware.com> X-Authenticated-User: 125194 peter@hurleysoftware.com Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 906 Lines: 28 User-space read() can run concurrently with receiving from device; waiting for receive_buf() to complete is not required. Signed-off-by: Peter Hurley --- drivers/tty/n_tty.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c index c81c270..2ce01aa 100644 --- a/drivers/tty/n_tty.c +++ b/drivers/tty/n_tty.c @@ -1722,7 +1722,6 @@ static inline int input_available_p(struct tty_struct *tty, int amt) { struct n_tty_data *ldata = tty->disc_data; - tty_flush_to_ldisc(tty); if (ldata->icanon && !L_EXTPROC(tty)) { if (ldata->canon_head != ldata->read_tail) return 1; -- 1.8.1.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/