Messages in this thread Patch in this message | | | Date | Tue, 02 May 2006 12:32:20 +0200 | From | "Jan Beulich" <> | Subject | Re: [Pcihpd-discuss] [PATCH] correct pciehp init recovery |
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>>> Kristen Accardi <kristen.c.accardi@intel.com> 28.04.06 19:38 >>> >On Fri, 2006-04-28 at 16:59 +0200, Jan Beulich wrote: >> Clean up the recovery path from errors during pcie_init(). >> >It's possible that this driver never actually requested an irq if was in >poll mode. Then you will call free_irq, when what you really want to do >is kill the timer that may have been started.
Thanks for pointing this out, here's the updated patch:
Clean up the recovery path from errors during pcie_init().
Signed-off-by: Jan Beulich <jbeulich@novell.com>
--- /home/jbeulich/tmp/linux-2.6.17-rc3/drivers/pci/hotplug/pciehp_hpc.c 2006-04-27 17:49:41.000000000 +0200 +++ 2.6.17-rc3-pciehp-init-recovery/drivers/pci/hotplug/pciehp_hpc.c 2006-04-28 09:20:55.000000000 +0200 @@ -1474,7 +1474,7 @@ int pcie_init(struct controller * ctrl, rc = hp_register_read_word(pdev, SLOT_CTRL(ctrl->cap_base), temp_word); if (rc) { err("%s : hp_register_read_word SLOT_CTRL failed\n", __FUNCTION__); - goto abort_free_ctlr; + goto abort_free_irq; } intr_enable = intr_enable | PRSN_DETECT_ENABLE; @@ -1500,19 +1500,19 @@ int pcie_init(struct controller * ctrl, rc = hp_register_write_word(pdev, SLOT_CTRL(ctrl->cap_base), temp_word); if (rc) { err("%s : hp_register_write_word SLOT_CTRL failed\n", __FUNCTION__); - goto abort_free_ctlr; + goto abort_free_irq; } rc = hp_register_read_word(php_ctlr->pci_dev, SLOT_STATUS(ctrl->cap_base), slot_status); if (rc) { err("%s : hp_register_read_word SLOT_STATUS failed\n", __FUNCTION__); - goto abort_free_ctlr; + goto abort_disable_intr; } temp_word = 0x1F; /* Clear all events */ rc = hp_register_write_word(php_ctlr->pci_dev, SLOT_STATUS(ctrl->cap_base), temp_word); if (rc) { err("%s : hp_register_write_word SLOT_STATUS failed\n", __FUNCTION__); - goto abort_free_ctlr; + goto abort_disable_intr; } if (pciehp_force) { @@ -1521,7 +1521,7 @@ int pcie_init(struct controller * ctrl, } else { rc = pciehp_get_hp_hw_control_from_firmware(ctrl->pci_dev); if (rc) - goto abort_free_ctlr; + goto abort_disable_intr; } /* Add this HPC instance into the HPC list */ @@ -1548,6 +1548,21 @@ int pcie_init(struct controller * ctrl, return 0; /* We end up here for the many possible ways to fail this API. */ +abort_disable_intr: + rc = hp_register_read_word(pdev, SLOT_CTRL(ctrl->cap_base), temp_word); + if (!rc) { + temp_word &= ~(intr_enable | HP_INTR_ENABLE); + rc = hp_register_write_word(pdev, SLOT_CTRL(ctrl->cap_base), temp_word); + } + if (rc) + err("%s : disabling interrupts failed\n", __FUNCTION__); + +abort_free_irq: + if (pciehp_poll_mode) + del_timer_sync(&php_ctlr->int_poll_timer); + else + free_irq(php_ctlr->irq, ctrl); + abort_free_ctlr: pcie_cap_base = saved_cap_base; kfree(php_ctlr);
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