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nusb/usbd: use longer reset delay for rootports

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Make reset delays more conservative:

The usb spec says root ports need 50ms reset minimum, use 100ms.
The usb spec says hub ports need 20ms minimum, use 50ms.
This commit is contained in:
cinap_lenrek 2024-12-15 21:19:57 +00:00
parent 2f685dd96b
commit d38dbf6415
2 changed files with 4 additions and 3 deletions
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5
sys/src/cmd/nusb/usbd/dat.h
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@ -56,8 +56,9 @@ enum
Pconfigured,
/* Delays, timeouts (ms) */
Resetdelay = 20, /* how much to wait after a reset */
Resumedelay = 20, /* how much to wait after a resume */
Rootresetdelay = 100, /* how much to wait after a root port reset (50ms by standard) */
Portresetdelay = 50, /* how much to wait after a hub port reset (20ms by standard) */
Resumedelay = 50, /* how much to wait after a resume (20ms by standard) */
Powerdelay = 100, /* after powering up ports */
Pollms = 250, /* port poll interval */

2
sys/src/cmd/nusb/usbd/hub.c
View file

@ -452,7 +452,7 @@ portattach(Hub *h, int p)
dprint(2, "%s: %s: port %d: set reset: %r\n", argv0, d->dir, p);
return -1;
}
sleep(Resetdelay);
sleep(d->depth<0? Rootresetdelay: Portresetdelay);
if((sts = portstatus(h, p)) == -1)
return -1;
sp = "full";