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authorDavid Fries <David@Fries.net>2014-02-08 13:37:38 -0600
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-02-08 13:30:43 -0800
commit7841b647b9c1b118ae4eed33a0af934818e60553 (patch)
tree9227726fe93a49bdbf10d1e226c92d5e408a39aa /drivers/w1
parentd3a8a9dbb903c73a7ec2deae4c9b7d74b6834f4c (diff)
downloadlinux-stable-7841b647b9c1b118ae4eed33a0af934818e60553.tar.gz
Revert ds1wm.c from "w1: hold bus_mutex in netlink and search"
This reverts ds1wm.c from commit d3a8a9dbb903c73a7ec2deae4c9b7d74b6834f4c. Of the three files changed ds1wm.c ds2490.c and w1_netlink.c, it turns out ds1wm.c was locking bus_mutex, but inside the loop and I missed it. Reverting ds1wm.c to the previous version. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: David Fries <David@Fries.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/w1')
-rw-r--r--drivers/w1/masters/ds1wm.c4
1 files changed, 1 insertions, 3 deletions
diff --git a/drivers/w1/masters/ds1wm.c b/drivers/w1/masters/ds1wm.c
index b077b8b42758..02df3b1381d2 100644
--- a/drivers/w1/masters/ds1wm.c
+++ b/drivers/w1/masters/ds1wm.c
@@ -326,14 +326,13 @@ 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");
- break;
+ return;
}
mutex_lock(&master_dev->bus_mutex);
@@ -440,7 +439,6 @@ 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);
}
/* --------------------------------------------------------------------- */