CVS commit: src/sys/dev/sdmmc

["Jared D. McNeill" <jmcneill%netbsd.org@localhost>]

Module Name:    src
Committed By:   jmcneill
Date:           Tue Jun  6 21:01:07 UTC 2017

Modified Files:
        src/sys/dev/sdmmc: ld_sdmmc.c

Log Message:
Fix a race between ld_sdmmc_start and ld_sdmmc_dobio that could result in
tasks getting lost from the task queue. The symptom of this is a NULL
deref in ld_sdmmc_start since the code assumes that a task will always be
available from the pool.

This changes the code to use pcq(9) instead of a TAILQ to manage the free
task list.


To generate a diff of this commit:
cvs rdiff -u -r1.26 -r1.27 src/sys/dev/sdmmc/ld_sdmmc.c

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