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Date: Sun, 20 Jan 2013 11:24:29 +0100 From: Borislav Petkov <bp@...en8.de> To: "Rafael J. Wysocki" <rjw@...k.pl> Cc: André Przywara <andre@...rep.de>, Leonid Isaev <lisaev@...il.iu.edu>, Tom Gundersen <teg@...m.no>, cpufreq@...r.kernel.org, linux-acpi@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>, Borislav Petkov <bp@...e.de> Subject: [PATCH 5/6] powernow-k8: Cleanup module request From: Borislav Petkov <bp@...e.de> Check whether we've actually already loaded acpi-cpufreq before requesting it. Signed-off-by: Borislav Petkov <bp@...e.de> --- drivers/cpufreq/powernow-k8.c | 21 +++++++++++++++++++-- 1 file changed, 19 insertions(+), 2 deletions(-) diff --git a/drivers/cpufreq/powernow-k8.c b/drivers/cpufreq/powernow-k8.c index 056faf6af1a9..0234d0c6d68c 100644 --- a/drivers/cpufreq/powernow-k8.c +++ b/drivers/cpufreq/powernow-k8.c @@ -1249,6 +1249,24 @@ static struct cpufreq_driver cpufreq_amd64_driver = { .attr = powernow_k8_attr, }; +static void __request_acpi_cpufreq(void) +{ + const char *cur_drv, *drv = "acpi-cpufreq"; + + cur_drv = cpufreq_get_current_driver(); + if (!cur_drv) + goto request; + + if (strncmp(cur_drv, drv, min_t(size_t, strlen(cur_drv), strlen(drv)))) + pr_warn(PFX "WTF driver: %s\n", cur_drv); + + return; + + request: + pr_warn(PFX "This CPU is not supported anymore, using acpi-cpufreq instead.\n"); + request_module(drv); +} + /* driver entry point for init */ static int __cpuinit powernowk8_init(void) { @@ -1256,8 +1274,7 @@ static int __cpuinit powernowk8_init(void) int rv; if (static_cpu_has(X86_FEATURE_HW_PSTATE)) { - pr_warn(PFX "this CPU is not supported anymore, using acpi-cpufreq instead.\n"); - request_module("acpi-cpufreq"); + __request_acpi_cpufreq(); return -ENODEV; } -- 1.8.1.rc3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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