diff options
| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2015-10-12 13:19:48 +0200 |
|---|---|---|
| committer | Darren Hart <dvhart@linux.intel.com> | 2015-10-15 17:23:30 +0200 |
| commit | 9d1d459bf52b4a07a934558e055bb61ad82f44cd (patch) | |
| tree | 9287729f176fa526c3aaadc99d96144d065fa9a9 | |
| parent | intel_scu_ipc: Switch to use module_pci_driver() macro (diff) | |
| download | linux-9d1d459bf52b4a07a934558e055bb61ad82f44cd.tar.xz linux-9d1d459bf52b4a07a934558e055bb61ad82f44cd.zip | |
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 <andriy.shevchenko@linux.intel.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
| -rw-r--r-- | drivers/platform/x86/intel_scu_ipc.c | 3 |
1 files changed, 3 insertions, 0 deletions
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(); } |