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| author | Frans Pop <elendil@planet.nl> | 2008-12-06 15:36:47 +0100 |
|---|---|---|
| committer | Stefan Richter <stefanr@s5r6.in-berlin.de> | 2009-01-04 23:50:33 +0100 |
| commit | d1069aea6840c24f6e0617a758334312b60d3fc6 (patch) | |
| tree | 674fdbace682472255dca24f9b713c41fa1c61fa /drivers/ieee1394/ohci1394.c | |
| parent | b17a55096071898454d7b5b6fb30cca7faedf9f1 (diff) | |
| download | kernel_samsung_smdk4412-d1069aea6840c24f6e0617a758334312b60d3fc6.tar.gz kernel_samsung_smdk4412-d1069aea6840c24f6e0617a758334312b60d3fc6.tar.bz2 kernel_samsung_smdk4412-d1069aea6840c24f6e0617a758334312b60d3fc6.zip | |
ieee1394: ohci1394: don't leave interrupts enabled during suspend/resume
On my HP 2510p I get the following in dmesg during near the end of most
resumes from suspend to RAM:
irq 19: nobody cared (try booting with the "irqpoll" option)
Pid: 0, comm: swapper Not tainted 2.6.28-rc7 #67
Call Trace:
<IRQ> [<ffffffffa00ee9e1>] ? ohci_irq_handler+0x60/0x7e9 [ohci1394]
[<ffffffff8026aa4d>] __report_bad_irq+0x38/0x87
[<ffffffff8026abaa>] note_interrupt+0x10e/0x174
[<ffffffff8026b262>] handle_fasteoi_irq+0xa7/0xd1
[<ffffffff8020eb87>] do_IRQ+0x73/0xe4
[<ffffffff8020c626>] ret_from_intr+0x0/0xa
<EOI> [<ffffffffa0012606>] ? acpi_idle_enter_bm+0x26b/0x2b2 [processor]
[<ffffffffa00125fc>] ? acpi_idle_enter_bm+0x261/0x2b2 [processor]
[<ffffffff8024f30f>] ? notifier_call_chain+0x33/0x5b
[<ffffffff803b9c64>] ? cpuidle_idle_call+0x8c/0xc4
[<ffffffff8020b312>] ? cpu_idle+0x4a/0x9a
[<ffffffff8042c5c8>] ? rest_init+0x5c/0x5e
handlers:
[<ffffffffa00ee981>] (ohci_irq_handler+0x0/0x7e9 [ohci1394])
Disabling IRQ #19
There also seems to be an interrupt storm during suspend/resume when this
happens:
19: 99968 33 IO-APIC-fasteoi ohci1394
This patch gets rid of both issues and makes the resume as a whole
significantly faster.
Signed-off-by: Frans Pop <elendil@planet.nl>
As was pointed out in http://lkml.org/lkml/2008/12/6/127, this does not
fix the cause of the interrupt storm. However, since the source of the
interrupts could not be determined yet, we make the system at least more
usable with this change.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Diffstat (limited to 'drivers/ieee1394/ohci1394.c')
| -rw-r--r-- | drivers/ieee1394/ohci1394.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/ieee1394/ohci1394.c b/drivers/ieee1394/ohci1394.c index e509e13cb7a..066726bcb0e 100644 --- a/drivers/ieee1394/ohci1394.c +++ b/drivers/ieee1394/ohci1394.c @@ -3381,6 +3381,7 @@ static int ohci1394_pci_suspend(struct pci_dev *dev, pm_message_t state) ohci_devctl(ohci->host, RESET_BUS, LONG_RESET_NO_FORCE_ROOT); ohci_soft_reset(ohci); + free_irq(dev->irq, ohci); err = pci_save_state(dev); if (err) { PRINT(KERN_ERR, "pci_save_state failed with %d", err); @@ -3421,6 +3422,13 @@ static int ohci1394_pci_resume(struct pci_dev *dev) reg_write(ohci, OHCI1394_IntEventClear, 0xffffffff); reg_write(ohci, OHCI1394_IntMaskClear, 0xffffffff); mdelay(50); + + if (request_irq(dev->irq, ohci_irq_handler, IRQF_SHARED, + OHCI1394_DRIVER_NAME, ohci)) { + PRINT_G(KERN_ERR, "Failed to allocate interrupt %d", dev->irq); + return -EIO; + } + ohci_initialize(ohci); hpsb_resume_host(ohci->host); |