| Message ID | 20241209130632.132074-8-pstanner@redhat.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | Remove implicit devres from pci_intx() | expand |
[cc->to: Alex W] On Mon, Dec 09, 2024 at 02:06:28PM +0100, Philipp Stanner wrote: > pci_intx() is a hybrid function which can sometimes be managed through > devres. To remove this hybrid nature from pci_intx(), it is necessary to > port users to either an always-managed or a never-managed version. > > vfio enables its PCI-Device with pci_enable_device(). Thus, it > needs the never-managed version. > > Replace pci_intx() with pci_intx_unmanaged(). > > Signed-off-by: Philipp Stanner <pstanner@redhat.com> Not applied yet, pending ack from Alex. > --- > drivers/vfio/pci/vfio_pci_core.c | 2 +- > drivers/vfio/pci/vfio_pci_intrs.c | 10 +++++----- > 2 files changed, 6 insertions(+), 6 deletions(-) > > diff --git a/drivers/vfio/pci/vfio_pci_core.c b/drivers/vfio/pci/vfio_pci_core.c > index 1ab58da9f38a..90240c8d51aa 100644 > --- a/drivers/vfio/pci/vfio_pci_core.c > +++ b/drivers/vfio/pci/vfio_pci_core.c > @@ -498,7 +498,7 @@ int vfio_pci_core_enable(struct vfio_pci_core_device *vdev) > if (vfio_pci_nointx(pdev)) { > pci_info(pdev, "Masking broken INTx support\n"); > vdev->nointx = true; > - pci_intx(pdev, 0); > + pci_intx_unmanaged(pdev, 0); > } else > vdev->pci_2_3 = pci_intx_mask_supported(pdev); > } > diff --git a/drivers/vfio/pci/vfio_pci_intrs.c b/drivers/vfio/pci/vfio_pci_intrs.c > index 8382c5834335..40abb0b937a2 100644 > --- a/drivers/vfio/pci/vfio_pci_intrs.c > +++ b/drivers/vfio/pci/vfio_pci_intrs.c > @@ -118,7 +118,7 @@ static bool __vfio_pci_intx_mask(struct vfio_pci_core_device *vdev) > */ > if (unlikely(!is_intx(vdev))) { > if (vdev->pci_2_3) > - pci_intx(pdev, 0); > + pci_intx_unmanaged(pdev, 0); > goto out_unlock; > } > > @@ -132,7 +132,7 @@ static bool __vfio_pci_intx_mask(struct vfio_pci_core_device *vdev) > * mask, not just when something is pending. > */ > if (vdev->pci_2_3) > - pci_intx(pdev, 0); > + pci_intx_unmanaged(pdev, 0); > else > disable_irq_nosync(pdev->irq); > > @@ -178,7 +178,7 @@ static int vfio_pci_intx_unmask_handler(void *opaque, void *data) > */ > if (unlikely(!is_intx(vdev))) { > if (vdev->pci_2_3) > - pci_intx(pdev, 1); > + pci_intx_unmanaged(pdev, 1); > goto out_unlock; > } > > @@ -296,7 +296,7 @@ static int vfio_intx_enable(struct vfio_pci_core_device *vdev, > */ > ctx->masked = vdev->virq_disabled; > if (vdev->pci_2_3) { > - pci_intx(pdev, !ctx->masked); > + pci_intx_unmanaged(pdev, !ctx->masked); > irqflags = IRQF_SHARED; > } else { > irqflags = ctx->masked ? IRQF_NO_AUTOEN : 0; > @@ -569,7 +569,7 @@ static void vfio_msi_disable(struct vfio_pci_core_device *vdev, bool msix) > * via their shutdown paths. Restore for NoINTx devices. > */ > if (vdev->nointx) > - pci_intx(pdev, 0); > + pci_intx_unmanaged(pdev, 0); > > vdev->irq_type = VFIO_PCI_NUM_IRQS; > } > -- > 2.47.1 >
On Thu, 12 Dec 2024 13:21:30 -0600 Bjorn Helgaas <helgaas@kernel.org> wrote: > [cc->to: Alex W] > > On Mon, Dec 09, 2024 at 02:06:28PM +0100, Philipp Stanner wrote: > > pci_intx() is a hybrid function which can sometimes be managed through > > devres. To remove this hybrid nature from pci_intx(), it is necessary to > > port users to either an always-managed or a never-managed version. > > > > vfio enables its PCI-Device with pci_enable_device(). Thus, it > > needs the never-managed version. > > > > Replace pci_intx() with pci_intx_unmanaged(). > > > > Signed-off-by: Philipp Stanner <pstanner@redhat.com> > > Not applied yet, pending ack from Alex. Acked-by: Alex Williamson <alex.williamson@redhat.com> > > > --- > > drivers/vfio/pci/vfio_pci_core.c | 2 +- > > drivers/vfio/pci/vfio_pci_intrs.c | 10 +++++----- > > 2 files changed, 6 insertions(+), 6 deletions(-) > > > > diff --git a/drivers/vfio/pci/vfio_pci_core.c b/drivers/vfio/pci/vfio_pci_core.c > > index 1ab58da9f38a..90240c8d51aa 100644 > > --- a/drivers/vfio/pci/vfio_pci_core.c > > +++ b/drivers/vfio/pci/vfio_pci_core.c > > @@ -498,7 +498,7 @@ int vfio_pci_core_enable(struct vfio_pci_core_device *vdev) > > if (vfio_pci_nointx(pdev)) { > > pci_info(pdev, "Masking broken INTx support\n"); > > vdev->nointx = true; > > - pci_intx(pdev, 0); > > + pci_intx_unmanaged(pdev, 0); > > } else > > vdev->pci_2_3 = pci_intx_mask_supported(pdev); > > } > > diff --git a/drivers/vfio/pci/vfio_pci_intrs.c b/drivers/vfio/pci/vfio_pci_intrs.c > > index 8382c5834335..40abb0b937a2 100644 > > --- a/drivers/vfio/pci/vfio_pci_intrs.c > > +++ b/drivers/vfio/pci/vfio_pci_intrs.c > > @@ -118,7 +118,7 @@ static bool __vfio_pci_intx_mask(struct vfio_pci_core_device *vdev) > > */ > > if (unlikely(!is_intx(vdev))) { > > if (vdev->pci_2_3) > > - pci_intx(pdev, 0); > > + pci_intx_unmanaged(pdev, 0); > > goto out_unlock; > > } > > > > @@ -132,7 +132,7 @@ static bool __vfio_pci_intx_mask(struct vfio_pci_core_device *vdev) > > * mask, not just when something is pending. > > */ > > if (vdev->pci_2_3) > > - pci_intx(pdev, 0); > > + pci_intx_unmanaged(pdev, 0); > > else > > disable_irq_nosync(pdev->irq); > > > > @@ -178,7 +178,7 @@ static int vfio_pci_intx_unmask_handler(void *opaque, void *data) > > */ > > if (unlikely(!is_intx(vdev))) { > > if (vdev->pci_2_3) > > - pci_intx(pdev, 1); > > + pci_intx_unmanaged(pdev, 1); > > goto out_unlock; > > } > > > > @@ -296,7 +296,7 @@ static int vfio_intx_enable(struct vfio_pci_core_device *vdev, > > */ > > ctx->masked = vdev->virq_disabled; > > if (vdev->pci_2_3) { > > - pci_intx(pdev, !ctx->masked); > > + pci_intx_unmanaged(pdev, !ctx->masked); > > irqflags = IRQF_SHARED; > > } else { > > irqflags = ctx->masked ? IRQF_NO_AUTOEN : 0; > > @@ -569,7 +569,7 @@ static void vfio_msi_disable(struct vfio_pci_core_device *vdev, bool msix) > > * via their shutdown paths. Restore for NoINTx devices. > > */ > > if (vdev->nointx) > > - pci_intx(pdev, 0); > > + pci_intx_unmanaged(pdev, 0); > > > > vdev->irq_type = VFIO_PCI_NUM_IRQS; > > } > > -- > > 2.47.1 > > >
diff --git a/drivers/vfio/pci/vfio_pci_core.c b/drivers/vfio/pci/vfio_pci_core.c index 1ab58da9f38a..90240c8d51aa 100644 --- a/drivers/vfio/pci/vfio_pci_core.c +++ b/drivers/vfio/pci/vfio_pci_core.c @@ -498,7 +498,7 @@ int vfio_pci_core_enable(struct vfio_pci_core_device *vdev) if (vfio_pci_nointx(pdev)) { pci_info(pdev, "Masking broken INTx support\n"); vdev->nointx = true; - pci_intx(pdev, 0); + pci_intx_unmanaged(pdev, 0); } else vdev->pci_2_3 = pci_intx_mask_supported(pdev); } diff --git a/drivers/vfio/pci/vfio_pci_intrs.c b/drivers/vfio/pci/vfio_pci_intrs.c index 8382c5834335..40abb0b937a2 100644 --- a/drivers/vfio/pci/vfio_pci_intrs.c +++ b/drivers/vfio/pci/vfio_pci_intrs.c @@ -118,7 +118,7 @@ static bool __vfio_pci_intx_mask(struct vfio_pci_core_device *vdev) */ if (unlikely(!is_intx(vdev))) { if (vdev->pci_2_3) - pci_intx(pdev, 0); + pci_intx_unmanaged(pdev, 0); goto out_unlock; } @@ -132,7 +132,7 @@ static bool __vfio_pci_intx_mask(struct vfio_pci_core_device *vdev) * mask, not just when something is pending. */ if (vdev->pci_2_3) - pci_intx(pdev, 0); + pci_intx_unmanaged(pdev, 0); else disable_irq_nosync(pdev->irq); @@ -178,7 +178,7 @@ static int vfio_pci_intx_unmask_handler(void *opaque, void *data) */ if (unlikely(!is_intx(vdev))) { if (vdev->pci_2_3) - pci_intx(pdev, 1); + pci_intx_unmanaged(pdev, 1); goto out_unlock; } @@ -296,7 +296,7 @@ static int vfio_intx_enable(struct vfio_pci_core_device *vdev, */ ctx->masked = vdev->virq_disabled; if (vdev->pci_2_3) { - pci_intx(pdev, !ctx->masked); + pci_intx_unmanaged(pdev, !ctx->masked); irqflags = IRQF_SHARED; } else { irqflags = ctx->masked ? IRQF_NO_AUTOEN : 0; @@ -569,7 +569,7 @@ static void vfio_msi_disable(struct vfio_pci_core_device *vdev, bool msix) * via their shutdown paths. Restore for NoINTx devices. */ if (vdev->nointx) - pci_intx(pdev, 0); + pci_intx_unmanaged(pdev, 0); vdev->irq_type = VFIO_PCI_NUM_IRQS; }
pci_intx() is a hybrid function which can sometimes be managed through devres. To remove this hybrid nature from pci_intx(), it is necessary to port users to either an always-managed or a never-managed version. vfio enables its PCI-Device with pci_enable_device(). Thus, it needs the never-managed version. Replace pci_intx() with pci_intx_unmanaged(). Signed-off-by: Philipp Stanner <pstanner@redhat.com> --- drivers/vfio/pci/vfio_pci_core.c | 2 +- drivers/vfio/pci/vfio_pci_intrs.c | 10 +++++----- 2 files changed, 6 insertions(+), 6 deletions(-)