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author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-12-06 08:17:24 -0800 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-12-06 08:17:24 -0800 |
commit | dd63af108f0814f0b589659f4e55a7a5af3b7e53 (patch) | |
tree | 0a7679fecb5b516cddb2153c632a4262899be6c3 /drivers/pci/msi.c | |
parent | 50d1e7d1077b276e8faa9eebf8b710edf31fdeea (diff) | |
parent | 009d0431c3914de64666bec0d350e54fdd59df6a (diff) | |
download | talos-obmc-linux-dd63af108f0814f0b589659f4e55a7a5af3b7e53.tar.gz talos-obmc-linux-dd63af108f0814f0b589659f4e55a7a5af3b7e53.zip |
Merge 3.18-rc7 into tty-next
This resolves the merge issue with drivers/tty/serial/of_serial.c
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/pci/msi.c')
-rw-r--r-- | drivers/pci/msi.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c index 9fab30af0e75..084587d7cd13 100644 --- a/drivers/pci/msi.c +++ b/drivers/pci/msi.c @@ -590,6 +590,20 @@ static struct msi_desc *msi_setup_entry(struct pci_dev *dev) return entry; } +static int msi_verify_entries(struct pci_dev *dev) +{ + struct msi_desc *entry; + + list_for_each_entry(entry, &dev->msi_list, list) { + if (!dev->no_64bit_msi || !entry->msg.address_hi) + continue; + dev_err(&dev->dev, "Device has broken 64-bit MSI but arch" + " tried to assign one above 4G\n"); + return -EIO; + } + return 0; +} + /** * msi_capability_init - configure device's MSI capability structure * @dev: pointer to the pci_dev data structure of MSI device function @@ -627,6 +641,13 @@ static int msi_capability_init(struct pci_dev *dev, int nvec) return ret; } + ret = msi_verify_entries(dev); + if (ret) { + msi_mask_irq(entry, mask, ~mask); + free_msi_irqs(dev); + return ret; + } + ret = populate_msi_sysfs(dev); if (ret) { msi_mask_irq(entry, mask, ~mask); @@ -739,6 +760,11 @@ static int msix_capability_init(struct pci_dev *dev, if (ret) goto out_avail; + /* Check if all MSI entries honor device restrictions */ + ret = msi_verify_entries(dev); + if (ret) + goto out_free; + /* * Some devices require MSI-X to be enabled before we can touch the * MSI-X registers. We need to mask all the vectors to prevent |