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| author | Stefan Richter <stefanr@s5r6.in-berlin.de> | 2008-06-05 20:50:53 +0200 |
|---|---|---|
| committer | Stefan Richter <stefanr@s5r6.in-berlin.de> | 2008-06-19 00:12:35 +0200 |
| commit | affc9c24ade666f9903163c12686da567dbfe06f (patch) | |
| tree | 3beff66f52c3201bd24b6dd6777c2942373c9881 /drivers/firewire | |
| parent | firewire: fw-ohci: disable PHY packet reception into AR context (diff) | |
| download | linux-affc9c24ade666f9903163c12686da567dbfe06f.tar.xz linux-affc9c24ade666f9903163c12686da567dbfe06f.zip | |
firewire: fw-ohci: write selfIDBufferPtr before LinkControl.rcvSelfID
OHCI 1.1 clause 5.10 requires that selfIDBufferPtr is valid when a 1 is
written into LinkControl.rcvSelfID.
This driver bug has so far not been known to cause harm because most
chips obviously accept a later selfIDBufferPtr write, at least before
HCControl.linkEnable is written.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Jarod Wilson <jwilson@redhat.com>
Signed-off-by: Kristian Høgsberg <krh@redhat.com>
Diffstat (limited to 'drivers/firewire')
| -rw-r--r-- | drivers/firewire/fw-ohci.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/firewire/fw-ohci.c b/drivers/firewire/fw-ohci.c index 481d3f3e2ef7..96e3cce36931 100644 --- a/drivers/firewire/fw-ohci.c +++ b/drivers/firewire/fw-ohci.c @@ -1473,6 +1473,7 @@ static int ohci_enable(struct fw_card *card, u32 *config_rom, size_t length) reg_write(ohci, OHCI1394_HCControlClear, OHCI1394_HCControl_noByteSwapData); + reg_write(ohci, OHCI1394_SelfIDBuffer, ohci->self_id_bus); reg_write(ohci, OHCI1394_LinkControlClear, OHCI1394_LinkControl_rcvPhyPkt); reg_write(ohci, OHCI1394_LinkControlSet, @@ -1488,7 +1489,6 @@ static int ohci_enable(struct fw_card *card, u32 *config_rom, size_t length) ar_context_run(&ohci->ar_request_ctx); ar_context_run(&ohci->ar_response_ctx); - reg_write(ohci, OHCI1394_SelfIDBuffer, ohci->self_id_bus); reg_write(ohci, OHCI1394_PhyUpperBound, 0x00010000); reg_write(ohci, OHCI1394_IntEventClear, ~0); reg_write(ohci, OHCI1394_IntMaskClear, ~0); |