target/linux/generic/pending-4.14/131-spi-use-gpio_set_value_cansleep-for-setting-chipsele.patch

   1 From: Felix Fietkau <nbd@nbd.name>
   2 Subject: spi: use gpio_set_value_cansleep for setting chipselect GPIO
   3
   4 Sleeping is safe inside spi_transfer_one_message, and some GPIO chips
   5 need to sleep for setting values
   6
   7 Signed-off-by: Felix Fietkau <nbd@nbd.name>
   8 ---
   9
  10 --- a/drivers/spi/spi.c
  11 +++ b/drivers/spi/spi.c
  12 @@ -729,7 +729,7 @@ static void spi_set_cs(struct spi_device
  13                 enable = !enable;
  14
  15         if (gpio_is_valid(spi->cs_gpio)) {
  16 -               gpio_set_value(spi->cs_gpio, !enable);
  17 +               gpio_set_value_cansleep(spi->cs_gpio, !enable);
  18                 /* Some SPI masters need both GPIO CS & slave_select */
  19                 if ((spi->controller->flags & SPI_MASTER_GPIO_SS) &&
  20                     spi->controller->set_cs)