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PCI/MSI: Set pci_dev:: Msi_enabled late

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The comment claiming that pci_dev::msi_enabled has to be set across setup
is a leftover from ancient code versions. Nothing in the setup code
requires the flag to be set anymore.

Set it in the success path and remove the extra goto label.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://lore.kernel.org/all/20250319105506.383222333@linutronix.de
This commit is contained in:
Thomas Gleixner 2025-03-19 11:56:49 +01:00
parent 497f68cff6
commit b0c44a5ec3
1 changed files with 3 additions and 8 deletions
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11
drivers/pci/msi/msi.c
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@ -358,12 +358,8 @@ static int msi_capability_init(struct pci_dev *dev, int nvec,
if (nvec > 1 && !pci_msi_domain_supports(dev, MSI_FLAG_MULTI_PCI_MSI, ALLOW_LEGACY))
return 1;
/*
* Disable MSI during setup in the hardware, but mark it enabled
* so that setup code can evaluate it.
*/
/* Disable MSI during setup in the hardware to erase stale state */
pci_msi_set_enable(dev, 0);
dev->msi_enabled = 1;
if (affd)
masks = irq_create_affinity_masks(nvec, affd);
@ -371,7 +367,7 @@ static int msi_capability_init(struct pci_dev *dev, int nvec,
msi_lock_descs(&dev->dev);
ret = msi_setup_msi_desc(dev, nvec, masks);
if (ret)
goto fail;
goto unlock;
/* All MSIs are unmasked by default; mask them all */
entry = msi_first_desc(&dev->dev, MSI_DESC_ALL);
@ -393,6 +389,7 @@ static int msi_capability_init(struct pci_dev *dev, int nvec,
goto err;
/* Set MSI enabled bits */
dev->msi_enabled = 1;
pci_intx_for_msi(dev, 0);
pci_msi_set_enable(dev, 1);
@ -403,8 +400,6 @@ static int msi_capability_init(struct pci_dev *dev, int nvec,
err:
pci_msi_unmask(&desc, msi_multi_mask(&desc));
pci_free_msi_irqs(dev);
fail:
dev->msi_enabled = 0;
unlock:
msi_unlock_descs(&dev->dev);
kfree(masks);