This is a note to let you know that I've just added the patch titled spi: ath79: always call chipselect function to the 5.10-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: spi-ath79-always-call-chipselect-function.patch and it can be found in the queue-5.10 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit bffae651e9976924224a3b285ff0d8de6454409d Author: David Bauer <mail@xxxxxxxxxxxxxxx> Date: Wed Mar 3 17:08:36 2021 +0100 spi: ath79: always call chipselect function [ Upstream commit 19e2132174583beb90c1bd3e9c842bc6d5c944d1 ] spi-bitbang has to call the chipselect function on the ath79 SPI driver in order to communicate with the SPI slave device, as the ath79 SPI driver has three dedicated chipselect lines but can also be used with GPIOs for the CS lines. Fixes commit 4a07b8bcd503 ("spi: bitbang: Make chipselect callback optional") Signed-off-by: David Bauer <mail@xxxxxxxxxxxxxxx> Link: https://lore.kernel.org/r/20210303160837.165771-1-mail@xxxxxxxxxxxxxxx Signed-off-by: Mark Brown <broonie@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/spi/spi-ath79.c b/drivers/spi/spi-ath79.c index eb9a243e9526..436327fb58de 100644 --- a/drivers/spi/spi-ath79.c +++ b/drivers/spi/spi-ath79.c @@ -158,6 +158,7 @@ static int ath79_spi_probe(struct platform_device *pdev) master->bits_per_word_mask = SPI_BPW_RANGE_MASK(1, 32); master->setup = spi_bitbang_setup; master->cleanup = spi_bitbang_cleanup; + master->flags = SPI_MASTER_GPIO_SS; if (pdata) { master->bus_num = pdata->bus_num; master->num_chipselect = pdata->num_chipselect;