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authorJohn Baldwin <jhb@FreeBSD.org>2021-02-11 21:49:43 +0000
committerJohn Baldwin <jhb@FreeBSD.org>2021-02-11 21:52:12 +0000
commit447b3557a9cc5f00a301be8404339f21a9a0faa8 (patch)
tree1f290d6a8ec6f264e9d4b6a2504b062178d17979 /sys/cam/nvme/nvme_da.c
parent6d2a10d96fb5d4ee42fd67b0b07a6d098db5d55a (diff)
downloadsrc-447b3557a9cc5f00a301be8404339f21a9a0faa8.tar.gz
src-447b3557a9cc5f00a301be8404339f21a9a0faa8.zip
cam: Permit non-pollable sims.
Some CAM sim drivers do not support polling (notably iscsi(4)). Rather than using a no-op poll routine that always times out requests, permit a SIM to set a NULL poll callback. cam_periph_runccb() will fail polled requests non-pollable sims immediately as if they had timed out. Reviewed by: scottl, mav (earlier version) Reviewed by: imp MFC after: 2 weeks Sponsored by: Chelsio Differential Revision: https://reviews.freebsd.org/D28453
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