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| author | Peter Hurley <peter@hurleysoftware.com> | 2013-03-27 06:56:01 -0400 |
|---|---|---|
| committer | Stefan Richter <stefanr@s5r6.in-berlin.de> | 2013-04-30 20:30:16 +0200 |
| commit | 67672134aaafd520a61dda448a662336e8fde236 (patch) | |
| tree | 874ff8c53e6b89451619be290bce259b99f407fb /drivers/firewire | |
| parent | de97cb64a959fe5ccf828b02d3a78de9f9defb67 (diff) | |
| download | linux-67672134aaafd520a61dda448a662336e8fde236.tar.bz2 | |
firewire: ohci: Improve bus reset error messages
Many of the error messages possible from bus_reset_work() do not
contain enough information to distinguish which error condition
occurred nor enough information to evaluate the error afterwards.
Differentiate all error conditions in bus_reset_work(); add
additional information to make error diagnosis possible.
[Stefan R: fixed self-ID endian conversion]
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Diffstat (limited to 'drivers/firewire')
| -rw-r--r-- | drivers/firewire/ohci.c | 27 |
1 files changed, 14 insertions, 13 deletions
diff --git a/drivers/firewire/ohci.c b/drivers/firewire/ohci.c index 925a2a6fe68f..c64b4801adaa 100644 --- a/drivers/firewire/ohci.c +++ b/drivers/firewire/ohci.c @@ -1911,7 +1911,7 @@ static void bus_reset_work(struct work_struct *work) reg = reg_read(ohci, OHCI1394_SelfIDCount); if (reg & OHCI1394_SelfIDCount_selfIDError) { - ohci_notice(ohci, "inconsistent self IDs\n"); + ohci_notice(ohci, "self ID receive error\n"); return; } /* @@ -1923,7 +1923,7 @@ static void bus_reset_work(struct work_struct *work) self_id_count = (reg >> 3) & 0xff; if (self_id_count > 252) { - ohci_notice(ohci, "inconsistent self IDs\n"); + ohci_notice(ohci, "bad selfIDSize (%08x)\n", reg); return; } @@ -1931,7 +1931,10 @@ static void bus_reset_work(struct work_struct *work) rmb(); for (i = 1, j = 0; j < self_id_count; i += 2, j++) { - if (ohci->self_id_cpu[i] != ~ohci->self_id_cpu[i + 1]) { + u32 id = cond_le32_to_cpu(ohci->self_id_cpu[i]); + u32 id2 = cond_le32_to_cpu(ohci->self_id_cpu[i + 1]); + + if (id != ~id2) { /* * If the invalid data looks like a cycle start packet, * it's likely to be the result of the cycle master @@ -1939,19 +1942,17 @@ static void bus_reset_work(struct work_struct *work) * so far are valid and should be processed so that the * bus manager can then correct the gap count. */ - if (cond_le32_to_cpu(ohci->self_id_cpu[i]) - == 0xffff008f) { - ohci_notice(ohci, - "ignoring spurious self IDs\n"); + if (id == 0xffff008f) { + ohci_notice(ohci, "ignoring spurious self IDs\n"); self_id_count = j; break; - } else { - ohci_notice(ohci, "inconsistent self IDs\n"); - return; } + + ohci_notice(ohci, "bad self ID %d/%d (%08x != ~%08x)\n", + j, self_id_count, id, id2); + return; } - ohci->self_id_buffer[j] = - cond_le32_to_cpu(ohci->self_id_cpu[i]); + ohci->self_id_buffer[j] = id; } if (ohci->quirks & QUIRK_TI_SLLZ059) { @@ -1964,7 +1965,7 @@ static void bus_reset_work(struct work_struct *work) } if (self_id_count == 0) { - ohci_notice(ohci, "inconsistent self IDs\n"); + ohci_notice(ohci, "no self IDs\n"); return; } rmb(); |