From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:58378 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754684AbeDWL1d (ORCPT ); Mon, 23 Apr 2018 07:27:33 -0400 Subject: patch "fpga-manager: altera-ps-spi: preserve nCONFIG state" added to char-misc-linus To: agust@denx.de, atull@kernel.org, gregkh@linuxfoundation.org, mdf@kernel.org, stable@vger.kernel.org From: Date: Mon, 23 Apr 2018 13:27:19 +0200 Message-ID: <1524482839152186@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled fpga-manager: altera-ps-spi: preserve nCONFIG state to my char-misc git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git in the char-misc-linus branch. The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.) The patch will hopefully also be merged in Linus's tree for the next -rc kernel release. If you have any questions about this process, please let me know. >>From 881c93c0fb73328845898344208fa0bf0d62cac6 Mon Sep 17 00:00:00 2001 From: Anatolij Gustschin Date: Sun, 15 Apr 2018 11:33:08 -0700 Subject: fpga-manager: altera-ps-spi: preserve nCONFIG state If the driver module is loaded when FPGA is configured, the FPGA is reset because nconfig is pulled low (low-active gpio inited with GPIOD_OUT_HIGH activates the signal which means setting its value to low). Init nconfig with GPIOD_OUT_LOW to prevent this. Signed-off-by: Anatolij Gustschin Acked-by: Alan Tull Signed-off-by: Moritz Fischer Cc: stable # 4.14+ Signed-off-by: Greg Kroah-Hartman --- drivers/fpga/altera-ps-spi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/fpga/altera-ps-spi.c b/drivers/fpga/altera-ps-spi.c index 14f14efdf0d5..06d212a3d49d 100644 --- a/drivers/fpga/altera-ps-spi.c +++ b/drivers/fpga/altera-ps-spi.c @@ -249,7 +249,7 @@ static int altera_ps_probe(struct spi_device *spi) conf->data = of_id->data; conf->spi = spi; - conf->config = devm_gpiod_get(&spi->dev, "nconfig", GPIOD_OUT_HIGH); + conf->config = devm_gpiod_get(&spi->dev, "nconfig", GPIOD_OUT_LOW); if (IS_ERR(conf->config)) { dev_err(&spi->dev, "Failed to get config gpio: %ld\n", PTR_ERR(conf->config)); -- 2.17.0