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usb: ohci: Remove unnecessary delays from hc_start and power power-on paths

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The usb spec says that we must wait a minimum amount of time after port
power on (exact time is in the hub descriptor), this is something which
we must not only do for root ports but also for external hub ports, which
is why the common usb_hub code already waits a full second after powering
up ports. Having a separate wait for just the root hub in the ohci-hcd
code only leads to doing the waiting twice for the root ports, so drop the
wait from the ohci-hcd code.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
This commit is contained in:
Hans de Goede 2015-05-10 14:10:23 +02:00 committed by Simon Glass
parent 47976d2c16
commit 969bb5bad3
1 changed files with 0 additions and 4 deletions
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4
drivers/usb/host/ohci-hcd.c
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@ -1338,7 +1338,6 @@ pkt_print(ohci, NULL, dev, pipe, buffer, transfer_len,
OK(0);
case (RH_PORT_POWER):
WR_RH_PORTSTAT(RH_PS_PPS);
mdelay(100);
OK(0);
case (RH_PORT_ENABLE): /* BUG IN HUP CODE *********/
if (RD_RH_PORTSTAT & RH_PS_CCS)
@ -1737,9 +1736,6 @@ static int hc_start(ohci_t *ohci)
ohci_writel(RH_HS_LPSC, &ohci->regs->roothub.status);
#endif /* OHCI_USE_NPS */
/* POTPGT delay is bits 24-31, in 2 ms units. */
mdelay((roothub_a(ohci) >> 23) & 0x1fe);
/* connect the virtual root hub */
ohci->rh.devnum = 0;