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ACPI fix for 5.11-rc5

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Modify a helper function in the ACPI core to match the behavior
 expected by its users so as to prevent NULL pointer dereferences
 and occasional memory corruption from occurring (Hans de Goede).
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Merge tag 'acpi-5.11-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI fix from Rafael Wysocki:
 "Modify a helper function in the ACPI core to match the behavior
  expected by its users so as to prevent NULL pointer dereferences and
  occasional memory corruption from occurring (Hans de Goede)"

* tag 'acpi-5.11-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI: scan: Make acpi_bus_get_device() clear return pointer on error
This commit is contained in:
Linus Torvalds 2021-01-21 11:28:30 -08:00
commit 6a52f4cf86
1 changed files with 2 additions and 0 deletions
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2
drivers/acpi/scan.c
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@ -586,6 +586,8 @@ static int acpi_get_device_data(acpi_handle handle, struct acpi_device **device,
if (!device)
return -EINVAL;
*device = NULL;
status = acpi_get_data_full(handle, acpi_scan_drop_device,
(void **)device, callback);
if (ACPI_FAILURE(status) || !*device) {