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firewire: ohci: initialize multiChanMode bits after reset

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OHCI 1.1 says:
| Since the value of this bit is undefined after reset in all IR
| contexts, software shall initialize this bit to zero in all contexts
| whether or not active to maintain the exclusive nature of this bit.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
This commit is contained in:
Clemens Ladisch 2012-06-13 22:29:20 +02:00 committed by Stefan Richter
parent 9d23f9e946
commit e18907cc8a
1 changed files with 5 additions and 0 deletions
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5
drivers/firewire/ohci.c
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@ -2279,6 +2279,11 @@ static int ohci_enable(struct fw_card *card,
ohci->bus_time_running = false; ohci->bus_time_running = false;
for (i = 0; i < 32; i++)
if (ohci->ir_context_support & (1 << i))
reg_write(ohci, OHCI1394_IsoRcvContextControlClear(i),
IR_CONTEXT_MULTI_CHANNEL_MODE);
version = reg_read(ohci, OHCI1394_Version) & 0x00ff00ff; version = reg_read(ohci, OHCI1394_Version) & 0x00ff00ff;
if (version >= OHCI_VERSION_1_1) { if (version >= OHCI_VERSION_1_1) {
reg_write(ohci, OHCI1394_InitialChannelsAvailableHi, reg_write(ohci, OHCI1394_InitialChannelsAvailableHi,