[coreboot-gerrit] Change in coreboot[master]: soc/intel/common: Prevent SMI storm when setting SPI WPD bit

[Angel Pons (Code Review)]

Attention is currently required from: Nico Huber, Patrick Rudolph, Benjamin Doron, Tim Wawrzynczak.
Angel Pons has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/50754 )

Change subject: soc/intel/common: Prevent SMI storm when setting SPI WPD bit
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Patch Set 4:

(2 comments)

File src/soc/intel/common/block/smm/smihandler.c:

https://review.coreboot.org/c/coreboot/+/50754/comment/6da30c3d_214a647c 
PS3, Line 388: fast_spi_clear_smi
> do you need to clear SMI_STS. […]

By the time `smihandler_southbridge_tco` is invoked, SMI_STS.TCO_STS has already been cleared

https://review.coreboot.org/c/coreboot/+/50754/comment/a9143b97_8c6d5c75 
PS3, Line 451: 	smi_sts = pmc_clear_smi_status();
SMI_STS.TCO_STS gets cleared here.