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authorJesse Barnes <jbarnes@virtuousgeek.org>2008-08-07 11:52:37 -0400
committerJesse Barnes <jbarnes@virtuousgeek.org>2008-08-07 11:52:37 -0400
commitabad2ec98f2ef357d62026cbc3989dabf33f2435 (patch)
treea2ffd7c8dd29d67dac2e78f23e26125dc413cb06 /drivers/pci
parentcb3952bf7853667a1cb3515e67f27e67f0fce9e8 (diff)
PCI: fully restore MSI state at resume time
With the recent change to avoid masking MSIs using the MSI enable bit, devices without an MSI mask bit will have their MSI capability always enabled when MSI is in use, so we need to restore it regardless of the mask bit state. Fixes kernel bz 11178. Acked-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'drivers/pci')
-rw-r--r--drivers/pci/msi.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c
index 18354817173c..4a10b5624f72 100644
--- a/drivers/pci/msi.c
+++ b/drivers/pci/msi.c
@@ -308,9 +308,8 @@ static void __pci_restore_msi_state(struct pci_dev *dev)
308 entry->msi_attrib.masked); 308 entry->msi_attrib.masked);
309 309
310 pci_read_config_word(dev, pos + PCI_MSI_FLAGS, &control); 310 pci_read_config_word(dev, pos + PCI_MSI_FLAGS, &control);
311 control &= ~(PCI_MSI_FLAGS_QSIZE | PCI_MSI_FLAGS_ENABLE); 311 control &= ~PCI_MSI_FLAGS_QSIZE;
312 if (entry->msi_attrib.maskbit || !entry->msi_attrib.masked) 312 control |= PCI_MSI_FLAGS_ENABLE;
313 control |= PCI_MSI_FLAGS_ENABLE;
314 pci_write_config_word(dev, pos + PCI_MSI_FLAGS, control); 313 pci_write_config_word(dev, pos + PCI_MSI_FLAGS, control);
315} 314}
316 315