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| author | David S. Miller <davem@sunset.davemloft.net> | 2007-08-30 22:27:28 -0700 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2007-08-30 23:06:51 -0700 |
| commit | 5f92c329364c0bf2d3a356da5e8759fbe349f9d1 (patch) | |
| tree | 2bf27d77009229a26c371102655c5f81c7e68d1e /arch/sparc64/kernel/pci_sun4v.c | |
| parent | 6e69d6068cc2aa545544189a1ee4d2e1a32ad591 (diff) | |
| download | op-kernel-dev-5f92c329364c0bf2d3a356da5e8759fbe349f9d1.zip op-kernel-dev-5f92c329364c0bf2d3a356da5e8759fbe349f9d1.tar.gz | |
[SPARC64]: Fix several bugs in MSI handling.
1) sun4{u,v}_build_msi() have improper return value handling.
We should always return negative error codes, instead of
using the magic value "0" which could in fact be a valid
MSI number.
2) sun4{u,v}_build_msi() should return -ENOMEM instead of
calling prom_prom() halt with kzalloc() of the interrupt
data fails.
3) We 'remembered' the MSI number using a singleton in the
struct device archdata area, this doesn't work for MSI-X
which can cause multiple MSIs assosciated with one device.
Delete that archdata member, and instead store the MSI
number in the IRQ chip data area.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc64/kernel/pci_sun4v.c')
| -rw-r--r-- | arch/sparc64/kernel/pci_sun4v.c | 18 |
1 files changed, 8 insertions, 10 deletions
diff --git a/arch/sparc64/kernel/pci_sun4v.c b/arch/sparc64/kernel/pci_sun4v.c index 466f4aa..da724b1 100644 --- a/arch/sparc64/kernel/pci_sun4v.c +++ b/arch/sparc64/kernel/pci_sun4v.c @@ -940,13 +940,13 @@ static int pci_sun4v_setup_msi_irq(unsigned int *virt_irq_p, if (msi_num < 0) return msi_num; - devino = sun4v_build_msi(pbm->devhandle, virt_irq_p, - pbm->msiq_first_devino, - (pbm->msiq_first_devino + - pbm->msiq_num)); - err = -ENOMEM; - if (!devino) + err = sun4v_build_msi(pbm->devhandle, virt_irq_p, + pbm->msiq_first_devino, + (pbm->msiq_first_devino + + pbm->msiq_num)); + if (err < 0) goto out_err; + devino = err; msiqid = ((devino - pbm->msiq_first_devino) + pbm->msiq_first); @@ -971,7 +971,7 @@ static int pci_sun4v_setup_msi_irq(unsigned int *virt_irq_p, if (pci_sun4v_msi_setvalid(pbm->devhandle, msi_num, HV_MSIVALID_VALID)) goto out_err; - pdev->dev.archdata.msi_num = msi_num; + sparc64_set_msi(*virt_irq_p, msi_num); if (entry->msi_attrib.is_64) { msg.address_hi = pbm->msi64_start >> 32; @@ -993,8 +993,6 @@ static int pci_sun4v_setup_msi_irq(unsigned int *virt_irq_p, out_err: free_msi(pbm, msi_num); - sun4v_destroy_msi(*virt_irq_p); - *virt_irq_p = 0; return err; } @@ -1006,7 +1004,7 @@ static void pci_sun4v_teardown_msi_irq(unsigned int virt_irq, unsigned long msiqid, err; unsigned int msi_num; - msi_num = pdev->dev.archdata.msi_num; + msi_num = sparc64_get_msi(virt_irq); err = pci_sun4v_msi_getmsiq(pbm->devhandle, msi_num, &msiqid); if (err) { printk(KERN_ERR "%s: getmsiq gives error %lu\n", |
