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firewire: fw-ohci: disable PHY packet reception into AR context

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We want the rcvPhyPkt bit in LinkControl off before we start using the
chip.  However, the spec says that the reset value of it is undefined.
Hence switch it explicitly off.

https://bugzilla.redhat.com/show_bug.cgi?id=244576#c48 shows that for
example the nForce2 integrated FireWire controller seems to have it on
by default.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Jarod Wilson <jwilson@redhat.com>
This commit is contained in:
Stefan Richter 2008-06-05 20:49:38 +02:00
parent ccff962943
commit e896ec4302
1 changed files with 2 additions and 0 deletions
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2
drivers/firewire/fw-ohci.c
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@ -1473,6 +1473,8 @@ static int ohci_enable(struct fw_card *card, u32 *config_rom, size_t length)
reg_write(ohci, OHCI1394_HCControlClear, reg_write(ohci, OHCI1394_HCControlClear,
OHCI1394_HCControl_noByteSwapData); OHCI1394_HCControl_noByteSwapData);
reg_write(ohci, OHCI1394_LinkControlClear,
OHCI1394_LinkControl_rcvPhyPkt);
reg_write(ohci, OHCI1394_LinkControlSet, reg_write(ohci, OHCI1394_LinkControlSet,
OHCI1394_LinkControl_rcvSelfID | OHCI1394_LinkControl_rcvSelfID |
OHCI1394_LinkControl_cycleTimerEnable | OHCI1394_LinkControl_cycleTimerEnable |