From 75c0758137c7ac647927b4b12bb5cfca96a0e4e6 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Fri, 25 Oct 2013 16:22:47 +0200 Subject: [PATCH] acpi-cpufreq: Fail initialization if driver cannot be registered Make acpi_cpufreq_init() return error codes when the driver cannot be registered so that the module doesn't stay useless in memory and so that acpi_cpufreq_exit() doesn't attempt to unregister things that have never been registered when the module is unloaded. Signed-off-by: Rafael J. Wysocki Acked-by: Viresh Kumar --- drivers/cpufreq/acpi-cpufreq.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/cpufreq/acpi-cpufreq.c b/drivers/cpufreq/acpi-cpufreq.c index d2c3253..506fd23 100644 --- a/drivers/cpufreq/acpi-cpufreq.c +++ b/drivers/cpufreq/acpi-cpufreq.c @@ -986,12 +986,12 @@ static int __init acpi_cpufreq_init(void) { int ret; + if (acpi_disabled) + return -ENODEV; + /* don't keep reloading if cpufreq_driver exists */ if (cpufreq_get_current_driver()) - return 0; - - if (acpi_disabled) - return 0; + return -EEXIST; pr_debug("acpi_cpufreq_init\n"); -- 2.7.4