MIRRORS/linux-yocto
1
0
Fork 0
mirror of git://git.yoctoproject.org/linux-yocto.git synced 2025-10-22 23:13:01 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity

mailbox: Not protect module_put with spin_lock_irqsave

Browse Source 
[ Upstream commit dddbd233e6 ]

&chan->lock is not supposed to protect 'chan->mbox'.
And in __mbox_bind_client, try_module_get is also not protected
by &chan->lock. So move module_put out of the lock protected
region.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Jassi Brar <jassisinghbrar@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Peng Fan 2025-04-11 21:14:10 +08:00 committed by Greg Kroah-Hartman
parent 7dd032d124
commit 8a997e1ab5
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/mailbox/mailbox.c
View File

@ -490,8 +490,8 @@ void mbox_free_channel(struct mbox_chan *chan)
if (chan->txdone_method == TXDONE_BY_ACK)
chan->txdone_method = TXDONE_BY_POLL;
module_put(chan->mbox->dev->driver->owner);
spin_unlock_irqrestore(&chan->lock, flags);
module_put(chan->mbox->dev->driver->owner);
}
EXPORT_SYMBOL_GPL(mbox_free_channel);