diff options
| author | Richard Spiegel <richard.spiegel@silverbackltd.com> | 2018-02-14 09:38:11 -0700 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2018-02-15 21:39:28 +0000 |
| commit | e0d306447a13652905f6224163d6c96d5a21e9bf (patch) | |
| tree | 325881db6932e00b1dad8d116d7f97d166547473 /src/drivers | |
| parent | 405f72952ceb0d28726cd576228fda43909951b1 (diff) | |
drivers/generic/adau7002/adau7002.c: Fix null pointer dereference
Procedures acpi_device_scope() and acpi_device_name() can under certain
conditions return NULL. Check the return before using them.
This fixes CID 1385944
BUG=b:73331544
TEST=Build kahlee.
Change-Id: Ifcdf905100d22a1d828394f8685641eb432bb836
Signed-off-by: Richard Spiegel <richard.spiegel@silverbackltd.com>
Reviewed-on: https://review.coreboot.org/23760
Reviewed-by: Martin Roth <martinroth@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Diffstat (limited to 'src/drivers')
| -rw-r--r-- | src/drivers/generic/adau7002/adau7002.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/src/drivers/generic/adau7002/adau7002.c b/src/drivers/generic/adau7002/adau7002.c index d21d513c59..0a94819ec2 100644 --- a/src/drivers/generic/adau7002/adau7002.c +++ b/src/drivers/generic/adau7002/adau7002.c @@ -29,12 +29,17 @@ static void adau7002_fill_ssdt(struct device *dev) { - if (!dev->enabled) + if (!dev || !dev->enabled) + return; + + const char *scope = acpi_device_scope(dev); + const char *name = acpi_device_name(dev); + if (!scope || !name) return; /* Device */ - acpigen_write_scope(acpi_device_scope(dev)); - acpigen_write_device(acpi_device_name(dev)); + acpigen_write_scope(scope); + acpigen_write_device(name); acpigen_write_name_string("_HID", ADAU7002_ACPI_HID); acpigen_write_name_integer("_UID", 0); acpigen_write_name_string("_DDN", dev->chip_ops->name); |