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bbswitch: Check for result before deref it

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This commit is contained in:
Lekensteyn 2011-12-13 00:07:30 +01:00
parent 398c8d2a7b
commit 6af35bd55b
1 changed files with 3 additions and 1 deletions
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bbswitch.c
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@ -63,7 +63,9 @@ static int acpi_optimus_dsm(acpi_handle handle, int func, char *args,
obj = (union acpi_object *)output.pointer; obj = (union acpi_object *)output.pointer;
if (obj->type == ACPI_TYPE_INTEGER) if (obj->type == ACPI_TYPE_INTEGER)
if (result)
*result = obj->integer.value; *result = obj->integer.value;
// REVS (revision number) not found, possibly not an Optimus? // REVS (revision number) not found, possibly not an Optimus?
if (obj->integer.value == 0x80000002) { if (obj->integer.value == 0x80000002) {
printk(KERN_INFO "bbswitch: Optimus function not found\n"); printk(KERN_INFO "bbswitch: Optimus function not found\n");