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platform: mips: cpu_hwmon: Disable driver on unsupported hardware
commit f4d430db17
upstream.
cpu_hwmon is unsupported on CPUs without loongson_chiptemp
register and csr.
Cc: stable@vger.kernel.org
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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parent
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@ -139,6 +139,9 @@ static int __init loongson_hwmon_init(void)
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csr_temp_enable = csr_readl(LOONGSON_CSR_FEATURES) &
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csr_temp_enable = csr_readl(LOONGSON_CSR_FEATURES) &
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LOONGSON_CSRF_TEMP;
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LOONGSON_CSRF_TEMP;
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if (!csr_temp_enable && !loongson_chiptemp[0])
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return -ENODEV;
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nr_packages = loongson_sysconf.nr_cpus /
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nr_packages = loongson_sysconf.nr_cpus /
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loongson_sysconf.cores_per_package;
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loongson_sysconf.cores_per_package;
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