[coreboot-gerrit] Change in coreboot[master]: acpi: Avoid freeing a device twice

[Simon Glass (Code Review)]

Hello build bot (Jenkins), Patrick Georgi, Duncan Laurie, Aaron Durbin,

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/coreboot/+/42892

to look at the new patch set (#3).

Change subject: acpi: Avoid freeing a device twice
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acpi: Avoid freeing a device twice

The current implementation of acpi_dp_write() frees the node after it
has written it.

If the structure contains a ACPI_DP_TYPE_CHILD then a recursive call to
acpi_dp_write() frees the child and then frees it again when returning
from the call. This results in a double free.

Split the implementation into two steps, one that ones and one that
frees. This is easier to understand and fixes the bug.

Note: This likely has no effect in coreboot since it doesn't seem to
have a proper free() implementation. But it might gain one one day.

BUG=none

Signed-off-by: Simon Glass 
Change-Id: Ife3917af10bc35a3c3eee38d8292f927ef15409d
---
M src/acpi/device.c
1 file changed, 7 insertions(+), 2 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/92/42892/3