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Thermal/int340x: Handle properly the case when _trt or _art acpi entry is missing

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If either of the entries was missing, the driver tried to free memory
using uninitialized pointer. In addition, it was dereferencing null
pointer.

Signed-off-by: Ilkka Koskinen <ilkka.koskinen@linux.intel.com>
Acked-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
This commit is contained in:
Ilkka Koskinen 2014-12-09 12:34:03 -08:00 committed by Zhang Rui
parent 97bf6af1f9
commit 7b09406390
1 changed files with 4 additions and 4 deletions
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8
drivers/thermal/int340x_thermal/acpi_thermal_rel.c
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@ -82,7 +82,7 @@ int acpi_parse_trt(acpi_handle handle, int *trt_count, struct trt **trtp,
struct acpi_buffer trt_format = { sizeof("RRNNNNNN"), "RRNNNNNN" };
if (!acpi_has_method(handle, "_TRT"))
return 0;
return -ENODEV;
status = acpi_evaluate_object(handle, "_TRT", NULL, &buffer);
if (ACPI_FAILURE(status))
@ -167,7 +167,7 @@ int acpi_parse_art(acpi_handle handle, int *art_count, struct art **artp,
sizeof("RRNNNNNNNNNNN"), "RRNNNNNNNNNNN" };
if (!acpi_has_method(handle, "_ART"))
return 0;
return -ENODEV;
status = acpi_evaluate_object(handle, "_ART", NULL, &buffer);
if (ACPI_FAILURE(status))
@ -321,8 +321,8 @@ static long acpi_thermal_rel_ioctl(struct file *f, unsigned int cmd,
unsigned long length = 0;
int count = 0;
char __user *arg = (void __user *)__arg;
struct trt *trts;
struct art *arts;
struct trt *trts = NULL;
struct art *arts = NULL;
switch (cmd) {
case ACPI_THERMAL_GET_TRT_COUNT: