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Make call to tw_cl_deferred_interrupt in twa_poll, not dependent on the

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return value from tw_cl_interrupt.
This commit is contained in:
Vinod Kashyap 2005-04-29 20:03:20 +00:00
parent 2c08ac2b38
commit b598979dc9
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=145688
1 changed files with 12 additions and 2 deletions
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14
sys/dev/twa/tw_osl_cam.c
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@ -482,8 +482,18 @@ twa_poll(struct cam_sim *sim)
struct twa_softc *sc = (struct twa_softc *)(cam_sim_softc(sim));
tw_osli_dbg_dprintf(3, sc, "entering; sc = %p", sc);
if (tw_cl_interrupt(&(sc->ctlr_handle)))
tw_cl_deferred_interrupt(&(sc->ctlr_handle));
/*
* It's been observed that twa_poll can get called (from
* dashutdown --> xpt_polled_action) even when interrupts are
* active, in which case, the ISR might clear the interrupt,
* leaving the call to tw_cl_interrupt below, no way of determining
* that the response from firmware is ready, resulting in
* tw_cl_deferred_interrupt never getting called. To cover this case,
* we will make the call to tw_cl_deferred_interrupt not dependent
* on the return value from tw_cl_interrupt.
*/
tw_cl_interrupt(&(sc->ctlr_handle));
tw_cl_deferred_interrupt(&(sc->ctlr_handle));
tw_osli_dbg_dprintf(3, sc, "exiting; sc = %p", sc);
}