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path: root/drivers/w1/masters
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Diffstat (limited to 'drivers/w1/masters')
-rw-r--r--drivers/w1/masters/ds1wm.c4
-rw-r--r--drivers/w1/masters/ds2490.c8
2 files changed, 9 insertions, 3 deletions
diff --git a/drivers/w1/masters/ds1wm.c b/drivers/w1/masters/ds1wm.c
index 02df3b1381d2..b077b8b42758 100644
--- a/drivers/w1/masters/ds1wm.c
+++ b/drivers/w1/masters/ds1wm.c
@@ -326,13 +326,14 @@ static void ds1wm_search(void *data, struct w1_master *master_dev,
unsigned slaves_found = 0;
unsigned int pass = 0;
+ mutex_lock(&master_dev->bus_mutex);
dev_dbg(&ds1wm_data->pdev->dev, "search begin\n");
while (true) {
++pass;
if (pass > 100) {
dev_dbg(&ds1wm_data->pdev->dev,
"too many attempts (100), search aborted\n");
- return;
+ break;
}
mutex_lock(&master_dev->bus_mutex);
@@ -439,6 +440,7 @@ static void ds1wm_search(void *data, struct w1_master *master_dev,
dev_dbg(&ds1wm_data->pdev->dev,
"pass: %d total: %d search done ms d bit pos: %d\n", pass,
slaves_found, ms_discrep_bit);
+ mutex_unlock(&master_dev->bus_mutex);
}
/* --------------------------------------------------------------------- */
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