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IB/mthca: Remove MSI support as scheduled

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Remove MSI support from the mthca driver, as scheduled.  There is no
reason to use MSI instead of MSI-X, since MSI-X performs better.  No
one has spoken up since MSI support was deprecated in commit f6be6fbe
("IB/mthca: Schedule MSI support for removal"), so apparently the MSI
support is unused.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Adrian Bunk
2008-01-01 15:47:10 +02:00
committed by Roland Dreier
parent 38dc732f47
commit e57895d389
4 changed files with 13 additions and 54 deletions
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38
drivers/infiniband/hw/mthca/mthca_main.c
View File

@ -65,14 +65,9 @@ static int msi_x = 1;
module_param(msi_x, int, 0444);
MODULE_PARM_DESC(msi_x, "attempt to use MSI-X if nonzero");
static int msi = 0;
module_param(msi, int, 0444);
MODULE_PARM_DESC(msi, "attempt to use MSI if nonzero (deprecated, use MSI-X instead)");
#else /* CONFIG_PCI_MSI */
#define msi_x (0)
#define msi (0)
#endif /* CONFIG_PCI_MSI */
@ -816,13 +811,11 @@ static int mthca_setup_hca(struct mthca_dev *dev)
err = mthca_NOP(dev, &status);
if (err || status) {
if (dev->mthca_flags & (MTHCA_FLAG_MSI | MTHCA_FLAG_MSI_X)) {
if (dev->mthca_flags & MTHCA_FLAG_MSI_X) {
mthca_warn(dev, "NOP command failed to generate interrupt "
"(IRQ %d).\n",
dev->mthca_flags & MTHCA_FLAG_MSI_X ?
dev->eq_table.eq[MTHCA_EQ_CMD].msi_x_vector :
dev->pdev->irq);
mthca_warn(dev, "Trying again with MSI/MSI-X disabled.\n");
dev->eq_table.eq[MTHCA_EQ_CMD].msi_x_vector);
mthca_warn(dev, "Trying again with MSI-X disabled.\n");
} else {
mthca_err(dev, "NOP command failed to generate interrupt "
"(IRQ %d), aborting.\n",
@ -1128,29 +1121,12 @@ static int __mthca_init_one(struct pci_dev *pdev, int hca_type)
if (msi_x && !mthca_enable_msi_x(mdev))
mdev->mthca_flags |= MTHCA_FLAG_MSI_X;
else if (msi) {
static int warned;
if (!warned) {
printk(KERN_WARNING PFX "WARNING: MSI support will be "
"removed from the ib_mthca driver in January 2008.\n");
printk(KERN_WARNING " If you are using MSI and cannot "
"switch to MSI-X, please tell "
"<general@lists.openfabrics.org>.\n");
++warned;
}
if (!pci_enable_msi(pdev))
mdev->mthca_flags |= MTHCA_FLAG_MSI;
}
err = mthca_setup_hca(mdev);
if (err == -EBUSY && (mdev->mthca_flags & (MTHCA_FLAG_MSI | MTHCA_FLAG_MSI_X))) {
if (err == -EBUSY && (mdev->mthca_flags & MTHCA_FLAG_MSI_X)) {
if (mdev->mthca_flags & MTHCA_FLAG_MSI_X)
pci_disable_msix(pdev);
if (mdev->mthca_flags & MTHCA_FLAG_MSI)
pci_disable_msi(pdev);
mdev->mthca_flags &= ~(MTHCA_FLAG_MSI_X | MTHCA_FLAG_MSI);
mdev->mthca_flags &= ~MTHCA_FLAG_MSI_X;
err = mthca_setup_hca(mdev);
}
@ -1192,8 +1168,6 @@ err_cleanup:
err_close:
if (mdev->mthca_flags & MTHCA_FLAG_MSI_X)
pci_disable_msix(pdev);
if (mdev->mthca_flags & MTHCA_FLAG_MSI)
pci_disable_msi(pdev);
mthca_close_hca(mdev);
@ -1246,8 +1220,6 @@ static void __mthca_remove_one(struct pci_dev *pdev)
if (mdev->mthca_flags & MTHCA_FLAG_MSI_X)
pci_disable_msix(pdev);
if (mdev->mthca_flags & MTHCA_FLAG_MSI)
pci_disable_msi(pdev);
ib_dealloc_device(&mdev->ib_dev);
mthca_release_regions(pdev, mdev->mthca_flags &