From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vignesh R Subject: [RFC PATCH 2/2] mtd: devices: m25p80: Enable spi-nor bounce buffer support Date: Mon, 27 Feb 2017 17:38:39 +0530 Message-ID: <20170227120839.16545-3-vigneshr@ti.com> References: <20170227120839.16545-1-vigneshr@ti.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: Frode Isaksen , Vignesh R , linux-kernel@vger.kernel.org, linux-spi@vger.kernel.org, linux-mtd@lists.infradead.org, linux-omap@vger.kernel.org To: David Woodhouse , Brian Norris , Boris Brezillon , Marek Vasut , Richard Weinberger , Cyrille Pitchen Return-path: In-Reply-To: <20170227120839.16545-1-vigneshr@ti.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-mtd" Errors-To: linux-mtd-bounces+gldm-linux-mtd-36=gmane.org@lists.infradead.org List-Id: linux-spi.vger.kernel.org Many SPI controller drivers use DMA to read/write from m25p80 compatible flashes. Therefore enable bounce buffers support provided by spi-nor framework to take care of handling vmalloc'd buffers which may not be DMA'able. Signed-off-by: Vignesh R --- drivers/mtd/devices/m25p80.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c index c4df3b1bded0..d05acf22eadf 100644 --- a/drivers/mtd/devices/m25p80.c +++ b/drivers/mtd/devices/m25p80.c @@ -241,6 +241,7 @@ static int m25p_probe(struct spi_device *spi) else flash_name = spi->modalias; + nor->flags |= SNOR_F_USE_BOUNCE_BUFFER; ret = spi_nor_scan(nor, flash_name, mode); if (ret) return ret; -- 2.11.0 ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/