Improve busy-wait loop during switch phy access in e6000sw
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Authored by mw_semihalf.com on May 14 2017, 12:43 AM.

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imp

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zbb
mmel
loos
fabient
• ian

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rS318521: Improve busy-wait loop during switch phy access in e6000sw

Summary

Hitherto implementation of PHY polling resulted in a risk of an
endless loop and very high occupation of SMI bus. Improve the
operation by limiting the polling tries and adding sleepable
pause.

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rS FreeBSD src repository - subversion

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mw_semihalf.com created this revision.May 14 2017, 12:43 AM

Herald added a subscriber: imp. · View Herald TranscriptMay 14 2017, 12:43 AM

mw_semihalf.com added a parent revision: D10712: Fix missing unlock in e6000sw driver.May 14 2017, 12:43 AM

mw_semihalf.com added a child revision: D10714: Poll PHY status using internal e6000sw registers.May 14 2017, 12:46 AM

loos accepted this revision.May 17 2017, 10:29 PM

This revision is now accepted and ready to land.May 17 2017, 10:29 PM

Closed by commit rS318521: Improve busy-wait loop during switch phy access in e6000sw (authored by wma). · Explain WhyMay 19 2017, 8:17 AM

This revision was automatically updated to reflect the committed changes.

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Path

Size

sys/

dev/

etherswitch/

e6000sw/

e6000sw.c

47 lines

Diff 28313

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sys/dev/etherswitch/e6000sw/e6000sw.c

Improve busy-wait loop during switch phy access in e6000swClosedPublicActions