From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:49137 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755776AbcDJR2e (ORCPT ); Sun, 10 Apr 2016 13:28:34 -0400 Subject: Patch "mmc: mmc_spi: Add Card Detect comments and fix CD GPIO case" has been added to the 4.4-stable tree To: damm+renesas@opensource.se, gregkh@linuxfoundation.org, ulf.hansson@linaro.org Cc: , From: Date: Sun, 10 Apr 2016 10:28:33 -0700 Message-ID: <146030931324113@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 mmc: mmc_spi: Add Card Detect comments and fix CD GPIO case to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: mmc-mmc_spi-add-card-detect-comments-and-fix-cd-gpio-case.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From bcdc9f260bdce09913db1464be9817170d51044a Mon Sep 17 00:00:00 2001 From: Magnus Damm Date: Tue, 16 Feb 2016 13:06:41 +0900 Subject: mmc: mmc_spi: Add Card Detect comments and fix CD GPIO case From: Magnus Damm commit bcdc9f260bdce09913db1464be9817170d51044a upstream. This patch fixes the MMC SPI driver from doing polling card detect when a CD GPIO that supports interrupts is specified using the gpios DT property. Without this patch the DT node below results in the following output: spi_gpio: spi-gpio { /* SD2 @ CN12 */ compatible = "spi-gpio"; #address-cells = <1>; #size-cells = <0>; gpio-sck = <&gpio6 16 GPIO_ACTIVE_HIGH>; gpio-mosi = <&gpio6 17 GPIO_ACTIVE_HIGH>; gpio-miso = <&gpio6 18 GPIO_ACTIVE_HIGH>; num-chipselects = <1>; cs-gpios = <&gpio6 21 GPIO_ACTIVE_LOW>; status = "okay"; spi@0 { compatible = "mmc-spi-slot"; reg = <0>; voltage-ranges = <3200 3400>; spi-max-frequency = <25000000>; gpios = <&gpio6 22 GPIO_ACTIVE_LOW>; /* CD */ }; }; # dmesg | grep mmc mmc_spi spi32766.0: SD/MMC host mmc0, no WP, no poweroff, cd polling mmc0: host does not support reading read-only switch, assuming write-enable mmc0: new SDHC card on SPI mmcblk0: mmc0:0000 SU04G 3.69 GiB mmcblk0: p1 With this patch applied the "cd polling" portion above disappears. Signed-off-by: Magnus Damm Signed-off-by: Ulf Hansson Signed-off-by: Greg Kroah-Hartman --- drivers/mmc/host/mmc_spi.c | 6 ++++++ 1 file changed, 6 insertions(+) --- a/drivers/mmc/host/mmc_spi.c +++ b/drivers/mmc/host/mmc_spi.c @@ -1436,6 +1436,12 @@ static int mmc_spi_probe(struct spi_devi host->pdata->cd_debounce); if (status != 0) goto fail_add_host; + + /* The platform has a CD GPIO signal that may support + * interrupts, so let mmc_gpiod_request_cd_irq() decide + * if polling is needed or not. + */ + mmc->caps &= ~MMC_CAP_NEEDS_POLL; mmc_gpiod_request_cd_irq(mmc); } Patches currently in stable-queue which might be from damm+renesas@opensource.se are queue-4.4/mmc-mmc_spi-add-card-detect-comments-and-fix-cd-gpio-case.patch