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Subject[PATCH] intel-wmi-thunderbolt: fix some error cases
Date
These were raised by Lukas Wunner as potential DOS attacks against
the system log by passing bad data to sysfs.

Signed-off-by: Mario Limonciello <mario.limonciello@dell.com>
---
drivers/platform/x86/intel-wmi-thunderbolt.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/platform/x86/intel-wmi-thunderbolt.c b/drivers/platform/x86/intel-wmi-thunderbolt.c
index 32fb6cc..c2257bd 100644
--- a/drivers/platform/x86/intel-wmi-thunderbolt.c
+++ b/drivers/platform/x86/intel-wmi-thunderbolt.c
@@ -41,13 +41,10 @@ static ssize_t force_power_store(struct device *dev,
if (mode == 0 || mode == 1) {
status = wmi_evaluate_method(INTEL_WMI_THUNDERBOLT_GUID, 0, 1,
&input, NULL);
- if (ACPI_FAILURE(status)) {
- pr_err("intel-wmi-thunderbolt: failed setting %s\n",
- buf);
+ if (ACPI_FAILURE(status))
return -ENODEV;
- }
} else {
- pr_err("intel-wmi-thunderbolt: unsupported mode: %d", mode);
+ return -EINVAL;
}
return count;
}
--
2.7.4
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