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authorAndrey Smirnov <andrew.smirnov@gmail.com>2016-12-18 15:25:33 -0800
committerMarcel Holtmann <marcel@holtmann.org>2017-01-12 22:12:43 +0100
commitf301606934b240fb54d8edf3618a0483e36046fc (patch)
tree309ef0ab5a735b9eb8ed6a66b3386b84e448298b /drivers/net/ieee802154/at86rf230.c
parent5eb35a6ccea61648a55713c076ab65423eea1ac0 (diff)
downloadlinux-f301606934b240fb54d8edf3618a0483e36046fc.tar.bz2
at86rf230: Allow slow GPIO pins for "rstn"
Driver code never touches "rstn" signal in atomic context, so there's no need to implicitly put such restriction on it by using gpio_set_value to manipulate it. Replace gpio_set_value to gpio_set_value_cansleep to fix that. As a an example of where such restriction might be inconvenient, consider a hardware design where "rstn" is connected to a pin of I2C/SPI GPIO expander chip. Cc: Chris Healy <cphealy@gmail.com> Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Stefan Schmidt <stefan@osg.samsung.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'drivers/net/ieee802154/at86rf230.c')
-rw-r--r--drivers/net/ieee802154/at86rf230.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/net/ieee802154/at86rf230.c b/drivers/net/ieee802154/at86rf230.c
index 46d53a6c8cf8..76ba7ecfe142 100644
--- a/drivers/net/ieee802154/at86rf230.c
+++ b/drivers/net/ieee802154/at86rf230.c
@@ -1715,9 +1715,9 @@ static int at86rf230_probe(struct spi_device *spi)
/* Reset */
if (gpio_is_valid(rstn)) {
udelay(1);
- gpio_set_value(rstn, 0);
+ gpio_set_value_cansleep(rstn, 0);
udelay(1);
- gpio_set_value(rstn, 1);
+ gpio_set_value_cansleep(rstn, 1);
usleep_range(120, 240);
}