diff options
| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2013-01-19 15:27:30 +0000 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2013-01-19 15:27:30 +0000 |
| commit | 210b1847b32951f52d19df229972399e5b987de2 (patch) | |
| tree | be6eeb3ba76b4f4331c98d5ba47aa233bea8f22d /drivers/cpufreq/longhaul.c | |
| parent | 93d5bf073a1e01035be66dc41860b9ae9aa9ccfa (diff) | |
| parent | d01723479e6a6c70c83295f7847477a016d5e14a (diff) | |
Merge branch 'for-rmk/virt/hyp-boot/fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/will/linux into fixes
Diffstat (limited to 'drivers/cpufreq/longhaul.c')
| -rw-r--r-- | drivers/cpufreq/longhaul.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/cpufreq/longhaul.c b/drivers/cpufreq/longhaul.c index f1fa500ac105..1180d536d1eb 100644 --- a/drivers/cpufreq/longhaul.c +++ b/drivers/cpufreq/longhaul.c @@ -77,7 +77,7 @@ static unsigned int longhaul_index; static int scale_voltage; static int disable_acpi_c3; static int revid_errata; - +static int enable; /* Clock ratios multiplied by 10 */ static int mults[32]; @@ -965,6 +965,10 @@ static int __init longhaul_init(void) if (!x86_match_cpu(longhaul_id)) return -ENODEV; + if (!enable) { + printk(KERN_ERR PFX "Option \"enable\" not set. Aborting.\n"); + return -ENODEV; + } #ifdef CONFIG_SMP if (num_online_cpus() > 1) { printk(KERN_ERR PFX "More than 1 CPU detected, " @@ -1021,6 +1025,10 @@ MODULE_PARM_DESC(scale_voltage, "Scale voltage of processor"); * such. */ module_param(revid_errata, int, 0644); MODULE_PARM_DESC(revid_errata, "Ignore CPU Revision ID"); +/* By default driver is disabled to prevent incompatible + * system freeze. */ +module_param(enable, int, 0644); +MODULE_PARM_DESC(enable, "Enable driver"); MODULE_AUTHOR("Dave Jones <davej@redhat.com>"); MODULE_DESCRIPTION("Longhaul driver for VIA Cyrix processors."); |