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MFp4 //depot/projects/usb/ @156706

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Adjust an UHCI portreset delay.

Submitted by:	Hans Petter Selasky
This commit is contained in:
Andrew Thompson 2009-01-26 17:55:07 +00:00
parent 6bd202b0ce
commit 023ac6ce67
1 changed files with 10 additions and 6 deletions
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16
sys/dev/usb2/controller/uhci2.c
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@ -2431,12 +2431,16 @@ uhci_portreset(uhci_softc_t *sc, uint16_t index, uint8_t use_polling)
x = URWMASK(UREAD2(sc, port));
UWRITE2(sc, port, x & ~UHCI_PORTSC_PR);
if (use_polling) {
/* polling */
DELAY(1000);
} else {
usb2_pause_mtx(&sc->sc_bus.bus_mtx, 1);
}
mtx_unlock(&sc->sc_bus.bus_mtx);
/*
* This delay needs to be exactly 100us, else some USB devices
* fail to attach!
*/
DELAY(100);
mtx_lock(&sc->sc_bus.bus_mtx);
DPRINTFN(4, "uhci port %d reset, status1 = 0x%04x\n",
index, UREAD2(sc, port));