[PATCHv4 2/4] cpuidle: fix error handling in __cpuidle_register_device
From: Rafael J. Wysocki <hidden>
Date: 2012-05-09 20:59:14
Also in:
linux-pm, lkml
On Tuesday, May 08, 2012, Colin Cross wrote:
Fix the error handling in __cpuidle_register_device to include the missing list_del. Move it to a label, which will simplify the error handling when coupled states are added. Reviewed-by: Santosh Shilimkar <redacted> Tested-by: Santosh Shilimkar <redacted> Reviewed-by: Kevin Hilman <redacted> Tested-by: Kevin Hilman <redacted> Signed-off-by: Colin Cross <redacted>
I've said Reviewed-by: Rafael J. Wysocki <redacted> to this already too. Rafael
quoted hunk ↗ jump to hunk
--- drivers/cpuidle/cpuidle.c | 13 +++++++++---- 1 files changed, 9 insertions(+), 4 deletions(-)diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c index 3e3e3e4..4540672 100644 --- a/drivers/cpuidle/cpuidle.c +++ b/drivers/cpuidle/cpuidle.c@@ -403,13 +403,18 @@ static int __cpuidle_register_device(struct cpuidle_device *dev) per_cpu(cpuidle_devices, dev->cpu) = dev; list_add(&dev->device_list, &cpuidle_detected_devices); - if ((ret = cpuidle_add_sysfs(cpu_dev))) { - module_put(cpuidle_driver->owner); - return ret; - } + ret = cpuidle_add_sysfs(cpu_dev); + if (ret) + goto err_sysfs; dev->registered = 1; return 0; + +err_sysfs: + list_del(&dev->device_list); + per_cpu(cpuidle_devices, dev->cpu) = NULL; + module_put(cpuidle_driver->owner); + return ret; } /**