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ohci: Add missing cache-flush for hcca area 

We need to cache-flush the hcca area after the initial memset, otherwise
on the first hc_interrupt we might see an old $random value as done_head and
try to interpret that as the address for a completed td (followed by chaos).

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
This commit is contained in:
Hans de Goede 2015-10-20 18:39:29 +02:00 committed by Marek Vasut
parent f5fb78a274
commit b748b24fb5
1 changed files with 1 additions and 0 deletions
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drivers/usb/host/ohci-hcd.c
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@ -2205,6 +2205,7 @@ int ohci_register(struct udevice *dev, struct ohci_regs *regs)
if (!ohci->hcca) if (!ohci->hcca)
return -ENOMEM; return -ENOMEM;
memset(ohci->hcca, 0, sizeof(struct ohci_hcca)); memset(ohci->hcca, 0, sizeof(struct ohci_hcca));
flush_dcache_hcca(ohci->hcca);
if (hc_reset(ohci) < 0) if (hc_reset(ohci) < 0)
return -EIO; return -EIO;