From 9d1d459bf52b4a07a934558e055bb61ad82f44cd Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Mon, 12 Oct 2015 14:19:48 +0300 Subject: [PATCH] intel_scu_ipc: Protect dev member assignment on ->remove() Protect the dev member assignment in ->remove() since user may potentially call unbind from a sysfs even if the driver is built-in. The latter might be racy with ongoing SCU communication. Signed-off-by: Andy Shevchenko Signed-off-by: Darren Hart --- drivers/platform/x86/intel_scu_ipc.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/platform/x86/intel_scu_ipc.c b/drivers/platform/x86/intel_scu_ipc.c index 9de2029aa909..f94b730540e2 100644 --- a/drivers/platform/x86/intel_scu_ipc.c +++ b/drivers/platform/x86/intel_scu_ipc.c @@ -625,7 +625,10 @@ static void ipc_remove(struct pci_dev *pdev) { struct intel_scu_ipc_dev *scu = pci_get_drvdata(pdev); + mutex_lock(&ipclock); scu->dev = NULL; + mutex_unlock(&ipclock); + iounmap(scu->i2c_base); intel_scu_devices_destroy(); } -- 2.20.1