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authorJean Delvare <khali@linux-fr.org>2008-07-16 19:30:05 +0200
committerJean Delvare <khali@mahadeva.delvare>2008-07-16 19:30:05 +0200
commitbd4bc3dbded9cd7b2bdca6bba1aecb4251a8039d (patch)
tree463f7b4283b3924abf504e4db020050bd2b55db5 /drivers/i2c/i2c-core.c
parent45158894d4d6704afbb4cefe55e5f6ca279fe12a (diff)
downloadop-kernel-dev-bd4bc3dbded9cd7b2bdca6bba1aecb4251a8039d.zip
op-kernel-dev-bd4bc3dbded9cd7b2bdca6bba1aecb4251a8039d.tar.gz
i2c: Clear i2c_adapter.dev on adapter removal
Clear i2c_adapter.dev on adapter removal. This makes it possible to re-add the adapter at a later point, which some drivers (i2c-amd756-s4882, i2c-nforce2-s4985) actually do. This fixes a bug reported by John Stultz here: http://lkml.org/lkml/2008/7/15/720 and by Ingo Molar there: http://lkml.org/lkml/2008/7/16/78 Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: John Stultz <johnstul@us.ibm.com> Cc: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'drivers/i2c/i2c-core.c')
-rw-r--r--drivers/i2c/i2c-core.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c
index 0a79f76..7608df8 100644
--- a/drivers/i2c/i2c-core.c
+++ b/drivers/i2c/i2c-core.c
@@ -654,6 +654,10 @@ int i2c_del_adapter(struct i2c_adapter *adap)
dev_dbg(&adap->dev, "adapter [%s] unregistered\n", adap->name);
+ /* Clear the device structure in case this adapter is ever going to be
+ added again */
+ memset(&adap->dev, 0, sizeof(adap->dev));
+
out_unlock:
mutex_unlock(&core_lock);
return res;
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