OpenWrt
/branches/18.06.1/target/linux/generic/pending-4.14/131-spi-use-gpio_set_value_cansleep-for-setting-chipsele.patch |
@@ -0,0 +1,20 @@ |
From: Felix Fietkau <nbd@nbd.name> |
Subject: spi: use gpio_set_value_cansleep for setting chipselect GPIO |
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Sleeping is safe inside spi_transfer_one_message, and some GPIO chips |
need to sleep for setting values |
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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) |