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path: root/drivers/w1/masters/ds2490.c
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Diffstat (limited to 'drivers/w1/masters/ds2490.c')
-rw-r--r--drivers/w1/masters/ds2490.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/w1/masters/ds2490.c b/drivers/w1/masters/ds2490.c
index db0bf3229bb6..7404ad3062b7 100644
--- a/drivers/w1/masters/ds2490.c
+++ b/drivers/w1/masters/ds2490.c
@@ -727,9 +727,11 @@ static void ds9490r_search(void *data, struct w1_master *master,
*/
u64 buf[2*64/8];
+ mutex_lock(&master->bus_mutex);
+
/* address to start searching at */
if (ds_send_data(dev, (u8 *)&master->search_id, 8) < 0)
- return;
+ goto search_out;
master->search_id = 0;
value = COMM_SEARCH_ACCESS | COMM_IM | COMM_RST | COMM_SM | COMM_F |
@@ -739,7 +741,7 @@ static void ds9490r_search(void *data, struct w1_master *master,
search_limit = 0;
index = search_type | (search_limit << 8);
if (ds_send_control(dev, value, index) < 0)
- return;
+ goto search_out;
do {
schedule_timeout(jtime);
@@ -791,6 +793,8 @@ static void ds9490r_search(void *data, struct w1_master *master,
master->max_slave_count);
set_bit(W1_WARN_MAX_COUNT, &master->flags);
}
+search_out:
+ mutex_unlock(&master->bus_mutex);
}
#if 0