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authorMatt DeVillier <matt.devillier@gmail.com>2020-10-07 13:11:58 -0500
committerPatrick Georgi <pgeorgi@google.com>2020-10-12 08:35:28 +0000
commit7f6335324bb80d9a06bc9832a4fcc3726d74976f (patch)
treeb098dbb3893fd98752bcb51a1a550636a16358f8 /Documentation/technotes/asan.md
parentd0aa999b576d2d778d5d7ac282370db45a54dcfd (diff)
sb/intel/lynxpoint: Enable/disable AER via Kconfig
Several changes[1][2] to the Linux kernel now enable ASPM/AER for the rt8169 network driver, for which it was previously disabled. This, coupled with the southbridge enabling AER for all PCIe devices, has resulted in a large amount of AER timeout errors in the kernel log for boards which utilize the rt8169 for on-board Ethernet (e.g., google/beltino). While performance is not impacted, the errors do accumulate. To mitigate this, guard AER enablement via Kconfig, select it by default (as to maintain current default behavior), and allow boards which need to disable it to do so (implemented in subsequent commits). This implementation is derived from that in soc/intel/broadwell. Test: build/boot google/beltino variants with AER disabled (CB:46136), verify dmesg log free of AER timeout errors. [1] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=671646c151d492c3846e6e6797e72ff757b5d65e [2] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=a99790bf5c7f3d68d8b01e015d3212a98ee7bd57 Change-Id: Ia03ef0d111335892c65122954c1248191ded7cb8 Signed-off-by: Matt DeVillier <matt.devillier@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/46133 Reviewed-by: Angel Pons <th3fanbus@gmail.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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