CVS commit: src/sys/dev/ic

["Hans Rosenfeld" <hans%netbsd.org@localhost>]

Module Name:    src
Committed By:   hans
Date:           Thu Mar 19 21:32:11 UTC 2026

Modified Files:
        src/sys/dev/ic: aic7xxx_inline.h

Log Message:
ahc: Fix support for multi-channel PCI controllers.

Some old EISA controllers driven by ahc had two channels on one
controller (aka "TWIN" channels), while all later PCI models
supporting multiple channels did so by having multiple controllers
in one PCI device, each being a separate PCI function.

The ahc interrupt handler wrongly assumed that anything but channel
'A' is always the 2nd channel of a TWIN channel controller, passing
sc_channel_b to scsipi_channel_{freeze,thaw}(). This of course is
wrong for multi-channel PCI ahc controllers, leading to a immediate
panic when there's anything connected to any channel but 'A'.


To generate a diff of this commit:
cvs rdiff -u -r1.15 -r1.16 src/sys/dev/ic/aic7xxx_inline.h

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.