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authorJan Kandziora <jjj@gmx.de>2017-09-20 23:52:45 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-10-04 10:29:22 +0200
commiteb8470db8bc018fc28901e4e3b0f48e33f1ea7df (patch)
tree9b6c9d5dbdcd890f00cf4ced3b52184344fadac1 /drivers/w1
parentnvmem: remove unneeded IS_ENABLED(CONFIG_NVMEM) conditional (diff)
downloadlinux-eb8470db8bc018fc28901e4e3b0f48e33f1ea7df.tar.xz
linux-eb8470db8bc018fc28901e4e3b0f48e33f1ea7df.zip
wire: export w1_touch_bit
The w1_ds28e17 driver from the next part of this patch needs to emit single-bit read timeslots to the DS28E17. The w1 subsystem already has this function but it is not exported outside drivers/w1/w1_io.c This subpatch exports the w1_touch_bit symbol with EXPORT_SYMBOL_GPL, same as the other exported symbols in drivers/w1/w1_io.c May be also useful later for writing drivers for other Onewire chips which do single-bit communication. Signed-off-by: Jan Kandziora <jjj@gmx.de> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/w1')
-rw-r--r--drivers/w1/w1_io.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/w1/w1_io.c b/drivers/w1/w1_io.c
index d191e1f80579..075d120e7b88 100644
--- a/drivers/w1/w1_io.c
+++ b/drivers/w1/w1_io.c
@@ -58,7 +58,7 @@ static u8 w1_read_bit(struct w1_master *dev);
* @dev: the master device
* @bit: 0 - write a 0, 1 - write a 0 read the level
*/
-static u8 w1_touch_bit(struct w1_master *dev, int bit)
+u8 w1_touch_bit(struct w1_master *dev, int bit)
{
if (dev->bus_master->touch_bit)
return dev->bus_master->touch_bit(dev->bus_master->data, bit);
@@ -69,6 +69,7 @@ static u8 w1_touch_bit(struct w1_master *dev, int bit)
return 0;
}
}
+EXPORT_SYMBOL_GPL(w1_touch_bit);
/**
* w1_write_bit() - Generates a write-0 or write-1 cycle.