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authorJacob Garber <jgarber1@ualberta.ca>2019-07-17 11:47:19 -0600
committerPatrick Georgi <pgeorgi@google.com>2019-08-20 15:30:47 +0000
commit293e6a96a9e19812f17bf6f925415e115612f607 (patch)
tree16c898c77d69b32bbfa8c56ba8d2cefecf539572 /.clang-format
parent4f387e1240dc05d4eff59ae973ab4516cd588e1f (diff)
nb/amd/pi,sb/amd/sr5650: Remove unnecessary allocation
add_ivrs_device_entries() is a recursive function, and each recursive call is passed a pointer to a root_level variable declared outside the function. In an attempt to make the function self-contained, the initial call is made with the root_level pointer set to NULL, and then the function attempts to detect this and allocate a root_level variable for the rest of the calls. This makes memory management very tricky - for example, the pi code incorrectly attempts to free the root_level variable at the end of *each* recursive call, which only avoids being a double-free because free() in coreboot is currently a no-op. Let's keep life simple and declare root_level as a local variable outside the first function call instead. Change-Id: Ifd63ee368fb89345b9b42ccb86cebcca64f32ac8 Signed-off-by: Jacob Garber <jgarber1@ualberta.ca> Found-by: Coverity CID 1362811 Reviewed-on: https://review.coreboot.org/c/coreboot/+/34387 Reviewed-by: Patrick Georgi <pgeorgi@google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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