diff options
| author | Felix Fietkau <nbd@nbd.name> | 2016-12-30 14:57:22 +0100 |
|---|---|---|
| committer | Felix Fietkau <nbd@nbd.name> | 2017-01-05 11:09:13 +0100 |
| commit | 5f9e36712799e7737695384e3c82278af3ddf368 (patch) | |
| tree | 63b3b10199cfc7940fd4f2a0ed7777245e17607e /target/linux/generic | |
| parent | af79fdbe4af32a287798b579141204bda056b8aa (diff) | |
| download | mtk-20170518-5f9e36712799e7737695384e3c82278af3ddf368.zip mtk-20170518-5f9e36712799e7737695384e3c82278af3ddf368.tar.gz mtk-20170518-5f9e36712799e7737695384e3c82278af3ddf368.tar.bz2 | |
kernel: spi: allow setting chipselect gpio to sleep
Fixes issues on some ar71xx MikroTik RouterBoard devices
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Diffstat (limited to 'target/linux/generic')
| -rw-r--r-- | target/linux/generic/patches-4.4/106-spi-use-gpio_set_value_cansleep-for-setting-chipsele.patch | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/target/linux/generic/patches-4.4/106-spi-use-gpio_set_value_cansleep-for-setting-chipsele.patch b/target/linux/generic/patches-4.4/106-spi-use-gpio_set_value_cansleep-for-setting-chipsele.patch new file mode 100644 index 0000000..57c9475 --- /dev/null +++ b/target/linux/generic/patches-4.4/106-spi-use-gpio_set_value_cansleep-for-setting-chipsele.patch @@ -0,0 +1,21 @@ +From: Felix Fietkau <nbd@nbd.name> +Date: Fri, 30 Dec 2016 14:53:45 +0100 +Subject: [PATCH] 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 +@@ -674,7 +674,7 @@ 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); + else if (spi->master->set_cs) + spi->master->set_cs(spi, !enable); + } |