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Enable interrupts only after installing the interrupt handler.

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git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25571 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Michael Lotz 2008-05-20 07:24:24 +00:00
parent cc9020e51d
commit 9cc4091e35
1 changed files with 5 additions and 3 deletions
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8
src/add-ons/kernel/busses/usb/ohci.cpp
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@ -259,10 +259,8 @@ OHCI::OHCI(pci_info *info, Stack *stack)
_WriteReg(OHCI_HCCA, (uint32)hccaPhysicalAddress);
_WriteReg(OHCI_CONTROL_HEAD_ED, (uint32)fDummyControl->physical_address);
_WriteReg(OHCI_BULK_HEAD_ED, (uint32)fDummyBulk->physical_address);
// Disable all interrupts and then switch on all desired interrupts
// Disable all interrupts
_WriteReg(OHCI_INTERRUPT_DISABLE, OHCI_ALL_INTERRUPTS);
_WriteReg(OHCI_INTERRUPT_ENABLE, OHCI_NORMAL_INTERRUPTS
| OHCI_MASTER_INTERRUPT_ENABLE);
// Switch on desired functional features
control = _ReadReg(OHCI_CONTROL);
control &= ~(OHCI_CONTROL_BULK_SERVICE_RATIO_MASK | OHCI_ENABLE_LIST
@ -320,6 +318,10 @@ OHCI::OHCI(pci_info *info, Stack *stack)
install_io_interrupt_handler(fPCIInfo->u.h0.interrupt_line,
_InterruptHandler, (void *)this, 0);
// Enable interesting interrupts now that the handler is in place
_WriteReg(OHCI_INTERRUPT_ENABLE, OHCI_NORMAL_INTERRUPTS
| OHCI_MASTER_INTERRUPT_ENABLE);
TRACE(("usb_ohci: OHCI Host Controller Driver constructed\n"));
fInitOK = true;
}