diff options
| author | Alexander Aring <aar@pengutronix.de> | 2016-09-01 11:24:57 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-03-15 09:57:15 +0800 |
| commit | 77fec8bc7a0fbee3bf5893d8c1ce755c029f2b40 (patch) | |
| tree | 1405f7c20fda8e0a2026415ddc20681d2386a7ba /drivers | |
| parent | bb5b96344ed378a1d5b8cf3bd149bb86919f3b9f (diff) | |
fakelb: fix schedule while atomic
commit bdca1fd9a6df745857e23c6056494b7fe062b4e6 upstream.
This patch changes the spinlock to mutex for the available fakelb phy
list. When holding the spinlock the ieee802154_unregister_hw is called
which holding the rtnl_mutex, in that case we get a "BUG: sleeping function
called from invalid context" error. We simple change the spinlock to
mutex which allows to hold the rtnl lock there.
Signed-off-by: Alexander Aring <aar@pengutronix.de>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ieee802154/fakelb.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/drivers/net/ieee802154/fakelb.c b/drivers/net/ieee802154/fakelb.c index 860d4aed8274..43617ded3773 100644 --- a/drivers/net/ieee802154/fakelb.c +++ b/drivers/net/ieee802154/fakelb.c @@ -30,7 +30,7 @@ static int numlbs = 2; static LIST_HEAD(fakelb_phys); -static DEFINE_SPINLOCK(fakelb_phys_lock); +static DEFINE_MUTEX(fakelb_phys_lock); static LIST_HEAD(fakelb_ifup_phys); static DEFINE_RWLOCK(fakelb_ifup_phys_lock); @@ -180,9 +180,9 @@ static int fakelb_add_one(struct device *dev) if (err) goto err_reg; - spin_lock(&fakelb_phys_lock); + mutex_lock(&fakelb_phys_lock); list_add_tail(&phy->list, &fakelb_phys); - spin_unlock(&fakelb_phys_lock); + mutex_unlock(&fakelb_phys_lock); return 0; @@ -214,10 +214,10 @@ static int fakelb_probe(struct platform_device *pdev) return 0; err_slave: - spin_lock(&fakelb_phys_lock); + mutex_lock(&fakelb_phys_lock); list_for_each_entry_safe(phy, tmp, &fakelb_phys, list) fakelb_del(phy); - spin_unlock(&fakelb_phys_lock); + mutex_unlock(&fakelb_phys_lock); return err; } @@ -225,10 +225,10 @@ static int fakelb_remove(struct platform_device *pdev) { struct fakelb_phy *phy, *tmp; - spin_lock(&fakelb_phys_lock); + mutex_lock(&fakelb_phys_lock); list_for_each_entry_safe(phy, tmp, &fakelb_phys, list) fakelb_del(phy); - spin_unlock(&fakelb_phys_lock); + mutex_unlock(&fakelb_phys_lock); return 0; } |