diff options
| author | CoolStar <coolstarorganization@gmail.com> | 2023-08-24 02:00:50 -0700 |
|---|---|---|
| committer | Matt DeVillier <matt.devillier@amd.corp-partner.google.com> | 2023-11-16 22:18:25 +0000 |
| commit | 42be899b6501cb8aa93329a2143a35765f0c4dd8 (patch) | |
| tree | bb5a0b1985a0e544a81ab8cad2eaed2b9ee06693 /src/acpi/device.c | |
| parent | 31327d8b4bc74cc24e2773f3d59fb50cd02109ef (diff) | |
acpi/device: Only return dev->ops->acpi_name if non-NULL
Returning a NULL device name can cause issues if something else does
handle it.
E.g. UART and GNA devices on Intel Alder Lake-N cause
INTERNAL_POWER_ERROR BSOD's in Windows when enabled due to invalid
packages being created from a NULL name
Test: build/boot google/nissa (craaskvin) to Win11
Change-Id: I0679147ad3e330d706bbf97c30bc11b2432e2e8a
Signed-off-by: CoolStar <coolstarorganization@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/77413
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-by: Felix Singer <service+coreboot-gerrit@felixsinger.de>
Diffstat (limited to 'src/acpi/device.c')
| -rw-r--r-- | src/acpi/device.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/src/acpi/device.c b/src/acpi/device.c index b76357e675..92000a3d8b 100644 --- a/src/acpi/device.c +++ b/src/acpi/device.c @@ -76,8 +76,11 @@ const char *acpi_device_name(const struct device *dev) return NULL; /* Check for device specific handler */ - if (dev->ops && dev->ops->acpi_name) - return dev->ops->acpi_name(dev); + if (dev->ops && dev->ops->acpi_name) { + name = dev->ops->acpi_name(dev); + if (name) + return name; + } /* Walk up the tree to find if any parent can identify this device */ while (pdev->bus) { |