[PATCH 07/10] platform: mips: cpu_hwmon: Disable driver on unsupported hardware

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 --- drivers/platform/mips/cpu_hwmon.c | 3 +++ 1 file changed, 3 insertions(+)

diff --git a/drivers/platform/mips/cpu_hwmon.c b/drivers/platform/mips/cpu_hwmon.c index d8c5f9195f85..2ac2f31090f9 100644 --- a/drivers/platform/mips/cpu_hwmon.c +++ b/drivers/platform/mips/cpu_hwmon.c @@ -139,6 +139,9 @@ static int __init loongson_hwmon_init(void) csr_temp_enable = csr_readl(LOONGSON_CSR_FEATURES) & LOONGSON_CSRF_TEMP;

+ if (!csr_temp_enable && !loongson_chiptemp[0]) + return -ENODEV; + nr_packages = loongson_sysconf.nr_cpus / loongson_sysconf.cores_per_package;