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soc/amd/common/block/acpi/ivrs: zero-initialize ivhd_[range,entry] 

Zero-initialize the ivhd_range and ivhd_entry structs to make sure that
the whole struct is in a defined state.

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: Iccacc89bfc497449ad0716a3436949505b65f748
Reviewed-on: https://review.coreboot.org/c/coreboot/+/76079
Reviewed-by: Fred Reitberger <reitbergerfred@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Felix Held 2023-06-23 19:03:57 +02:00
parent 8cbafe8723
commit fe242cea1e
1 changed files with 3 additions and 0 deletions
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3
src/soc/amd/common/block/acpi/ivrs.c
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@ -69,6 +69,7 @@ static unsigned long ivhd_dev_range(unsigned long current, uint16_t start_devid,
/* 4-byte IVHD structures must be aligned to the 4-byte boundary. */
current = ALIGN_UP(current, 4);
ivrs_ivhd_generic_t *ivhd_range = (ivrs_ivhd_generic_t *)current;
memset(ivhd_range, 0, sizeof(*ivhd_range));
/* Create the start range IVHD entry */
ivhd_range->type = IVHD_DEV_4_BYTE_START_RANGE;
@ -93,6 +94,7 @@ static unsigned long add_ivhd_dev_entry(struct device *parent, struct device *de
/* 4-byte IVHD structures must be aligned to the 4-byte boundary. */
*current = ALIGN_UP(*current, 4);
ivrs_ivhd_generic_t *ivhd_entry = (ivrs_ivhd_generic_t *)*current;
memset(ivhd_entry, 0, sizeof(*ivhd_entry));
ivhd_entry->type = type;
ivhd_entry->dev_id = dev->path.pci.devfn | (dev->bus->secondary << 8);
@ -100,6 +102,7 @@ static unsigned long add_ivhd_dev_entry(struct device *parent, struct device *de
*current += sizeof(ivrs_ivhd_generic_t);
} else if (type == IVHD_DEV_8_BYTE_ALIAS_SELECT) {
ivrs_ivhd_alias_t *ivhd_entry = (ivrs_ivhd_alias_t *)*current;
memset(ivhd_entry, 0, sizeof(*ivhd_entry));
ivhd_entry->type = type;
ivhd_entry->dev_id = dev->path.pci.devfn | (dev->bus->secondary << 8);