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Applied patch from MAEKAWA Masahide <bishop@rr.iij4u.or.jp>. (PR2)

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Seems to solve a problem with a mouse not responding to movements in the
X direction. Problem description is still rather vague and solution is
not exactly clear. Problem might be a compiler optimisation.
This commit is contained in:
Nick Hibma 1999-02-15 21:41:43 +00:00
parent 08c3a58944
commit fe7627280b
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=44072
1 changed files with 8 additions and 0 deletions
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8
sys/dev/usb/ums.c
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@ -394,10 +394,12 @@ ums_detach(device_t self)
/* someone waiting for data */
if (sc->state & UMS_ASLEEP) {
DPRINTF(("Waking up %p\n", sc));
sc->state &= ~UMS_ASLEEP; /* PR2 */
wakeup(sc);
}
if (sc->state & UMS_SELECT) {
DPRINTF(("Waking up select %p\n", &sc->rsel));
sc->state &= ~UMS_SELECT; /* PR2 */
selwakeup(&sc->rsel);
}
@ -513,10 +515,12 @@ ums_intr(reqh, addr, status)
/* someone waiting for data */
if (sc->state & UMS_ASLEEP) {
DPRINTF(("Waking up %p\n", sc));
sc->state &= ~UMS_ASLEEP; /* PR2 */
wakeup(sc);
}
if (sc->state & UMS_SELECT) {
DPRINTF(("Waking up select %p\n", &sc->rsel));
sc->state &= ~UMS_SELECT; /* PR2 */
selwakeup(&sc->rsel);
}
#endif
@ -636,7 +640,9 @@ ums_read(dev_t dev, struct uio *uio, int flag)
*/
sc->state |= UMS_ASLEEP;
error = tsleep(sc, PZERO | PCATCH, "umsrea", 0);
/* PR2: statement moved to ums_poll/ums_detach
sc->state &= ~UMS_ASLEEP;
*/
if (error) {
splx(s);
return error;
@ -683,7 +689,9 @@ ums_poll(dev_t dev, int events, struct proc *p)
} else {
sc->state |= UMS_SELECT;
selrecord(p, &sc->rsel);
/* PR2: statement moved to ums_poll/ums_detach
sc->state &= ~UMS_SELECT;
*/
}
}
splx(s);