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| author | Andrew Morton <akpm@linux-foundation.org> | 2008-03-17 14:21:18 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2008-03-24 22:38:44 -0700 |
| commit | 49741c4d01554c2630cea02cfdf236b17062a912 (patch) | |
| tree | 715cea9da25804eebc683925616bd0f6042d6819 /drivers/pci/pci.c | |
| parent | 8a443df40b35da89e32fcd499d7720c8c2cc2eee (diff) | |
| download | kernel_samsung_smdk4412-49741c4d01554c2630cea02cfdf236b17062a912.zip kernel_samsung_smdk4412-49741c4d01554c2630cea02cfdf236b17062a912.tar.gz kernel_samsung_smdk4412-49741c4d01554c2630cea02cfdf236b17062a912.tar.bz2 | |
PCI: revert "pcie: utilize pcie transaction pending bit"
Revert as it is reported to cause problems for people.
commit 4348a2dc49f9baecd34a9b0904245488c6189398
Author: Shaohua Li <shaohua.li@intel.com>
Date: Wed Oct 24 10:45:08 2007 +0800
pcie: utilize pcie transaction pending bit
PCIE has a mechanism to wait for Non-Posted request to complete. I think
pci_disable_device is a good place to do this.
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Due to the regression reported at
http://bugzilla.kernel.org/show_bug.cgi?id=10065
Cc: Shaohua Li <shaohua.li@intel.com>
Cc: Soeren Sonnenburg <kernel@nn7.de>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/pci/pci.c')
| -rw-r--r-- | drivers/pci/pci.c | 21 |
1 files changed, 0 insertions, 21 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 183fdda..a4445b7 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -314,24 +314,6 @@ int pci_find_ht_capability(struct pci_dev *dev, int ht_cap) } EXPORT_SYMBOL_GPL(pci_find_ht_capability); -void pcie_wait_pending_transaction(struct pci_dev *dev) -{ - int pos; - u16 reg16; - - pos = pci_find_capability(dev, PCI_CAP_ID_EXP); - if (!pos) - return; - while (1) { - pci_read_config_word(dev, pos + PCI_EXP_DEVSTA, ®16); - if (!(reg16 & PCI_EXP_DEVSTA_TRPND)) - break; - cpu_relax(); - } - -} -EXPORT_SYMBOL_GPL(pcie_wait_pending_transaction); - /** * pci_find_parent_resource - return resource region of parent bus of given region * @dev: PCI device structure contains resources to be searched @@ -936,9 +918,6 @@ pci_disable_device(struct pci_dev *dev) if (atomic_sub_return(1, &dev->enable_cnt) != 0) return; - /* Wait for all transactions are finished before disabling the device */ - pcie_wait_pending_transaction(dev); - pci_read_config_word(dev, PCI_COMMAND, &pci_command); if (pci_command & PCI_COMMAND_MASTER) { pci_command &= ~PCI_COMMAND_MASTER; |