From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754858AbaAUPK0 (ORCPT ); Tue, 21 Jan 2014 10:10:26 -0500 Received: from andre.telenet-ops.be ([195.130.132.53]:59805 "EHLO andre.telenet-ops.be" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754438AbaAUPKU (ORCPT ); Tue, 21 Jan 2014 10:10:20 -0500 From: Geert Uytterhoeven To: Mark Brown Cc: linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org, Geert Uytterhoeven Subject: [PATCH v2 2/5] spi: Clarify transfer_one() w.r.t. spi_finalize_current_transfer() Date: Tue, 21 Jan 2014 16:10:06 +0100 Message-Id: <1390317009-8292-2-git-send-email-geert@linux-m68k.org> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1390317009-8292-1-git-send-email-geert@linux-m68k.org> References: <1390317009-8292-1-git-send-email-geert@linux-m68k.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Geert Uytterhoeven Signed-off-by: Geert Uytterhoeven --- v2: Rephrased include/linux/spi/spi.h | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h index 21a7251d85ee..ba69940a6515 100644 --- a/include/linux/spi/spi.h +++ b/include/linux/spi/spi.h @@ -282,10 +282,12 @@ static inline void spi_unregister_driver(struct spi_driver *sdrv) * @prepare_message: set up the controller to transfer a single message, * for example doing DMA mapping. Called from threaded * context. - * @transfer_one: transfer a single spi_transfer. When the - * driver is finished with this transfer it must call - * spi_finalize_current_transfer() so the subsystem can issue - * the next transfer + * @transfer_one: transfer a single spi_transfer. + * - return 0 if the transfer is finished, + * - return 1 if the transfer is still in progress. When + * the driver is finished with this transfer it must + * call spi_finalize_current_transfer() so the subsystem + * can issue the next transfer * @unprepare_message: undo any work done by prepare_message(). * @cs_gpios: Array of GPIOs to use as chip select lines; one per CS * number. Any individual value may be -ENOENT for CS lines that -- 1.7.9.5