From: Junxiao Chang <junxiao.chang@xxxxxxxxx>
If punit or telemetry device initialization fails, pmc driver should
unregister and return failure.
This change is to fix a kernel panic when removing kernel module
intel_pmc_ipc.
Fixes: 48c1917088ba ("platform:x86: Add Intel telemetry platform device")
Signed-off-by: Junxiao Chang <junxiao.chang@xxxxxxxxx>
---
drivers/platform/x86/intel_pmc_ipc.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/platform/x86/intel_pmc_ipc.c b/drivers/platform/x86/intel_pmc_ipc.c
index 7964ba2..d37cbd1 100644
--- a/drivers/platform/x86/intel_pmc_ipc.c
+++ b/drivers/platform/x86/intel_pmc_ipc.c
@@ -771,13 +771,17 @@ static int ipc_create_pmc_devices(void)
if (ret) {
dev_err(ipcdev.dev, "Failed to add punit platform device\n");
platform_device_unregister(ipcdev.tco_dev);
+ return ret;
}
if (!ipcdev.telem_res_inval) {
ret = ipc_create_telemetry_device();
- if (ret)
+ if (ret) {
dev_warn(ipcdev.dev,
"Failed to add telemetry platform device\n");
+ platform_device_unregister(ipcdev.punit_dev);
+ platform_device_unregister(ipcdev.tco_dev);
+ }
}
return ret;
--
2.7.4
