OpenWrt – Rev 1

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From: Felix Fietkau <nbd@nbd.name>
Subject: spi: use gpio_set_value_cansleep for setting chipselect GPIO

Sleeping is safe inside spi_transfer_one_message, and some GPIO chips
need to sleep for setting values

Signed-off-by: Felix Fietkau <nbd@nbd.name>
---

--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -729,7 +729,7 @@ static void spi_set_cs(struct spi_device
                enable = !enable;
 
        if (gpio_is_valid(spi->cs_gpio)) {
-               gpio_set_value(spi->cs_gpio, !enable);
+               gpio_set_value_cansleep(spi->cs_gpio, !enable);
                /* Some SPI masters need both GPIO CS & slave_select */
                if ((spi->controller->flags & SPI_MASTER_GPIO_SS) &&
                    spi->controller->set_cs)