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if_iwm - Check sc->sc_attached flag in suspend/resume callbacks.

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* There is (almost) nothing to do in suspend/resume if if_iwm has failed
during initialization (e.g. because of firmware load failure) and was
already uninitialized by iwm_detach_local().

Submitted by:	Augustin Cavalier <waddlesplash@gmail.com> (Haiku)
Obtained from:	DragonFlyBSD (67b5e090efb225654815fed91020db6cfc16bb19)
This commit is contained in:
Kyle Evans 2019-01-24 03:42:59 +00:00
parent 544b40d85e
commit 797b6586c6
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=343376
1 changed files with 7 additions and 0 deletions
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7
sys/dev/iwm/if_iwm.c
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@ -6301,6 +6301,10 @@ iwm_resume(device_t dev)
* PCI Tx retries from interfering with C3 CPU state.
*/
pci_write_config(dev, PCI_CFG_RETRY_TIMEOUT, 0x00, 1);
if (!sc->sc_attached)
return 0;
iwm_init_task(device_get_softc(dev));
IWM_LOCK(sc);
@ -6324,6 +6328,9 @@ iwm_suspend(device_t dev)
do_stop = !! (sc->sc_ic.ic_nrunning > 0);
if (!sc->sc_attached)
return (0);
ieee80211_suspend_all(&sc->sc_ic);
if (do_stop) {