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| author | Jan Kandziora <jjj@gmx.de> | 2017-09-20 23:52:45 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-10-04 10:29:22 +0200 |
| commit | eb8470db8bc018fc28901e4e3b0f48e33f1ea7df (patch) | |
| tree | 9b6c9d5dbdcd890f00cf4ced3b52184344fadac1 /drivers/w1 | |
| parent | e701c67c30e65cc887b1ebdd6ef91010f0ca46fa (diff) | |
| download | lwn-eb8470db8bc018fc28901e4e3b0f48e33f1ea7df.tar.gz lwn-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.c | 3 |
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. |