diff options
| author | Sebastian Ott <sebott@linux.vnet.ibm.com> | 2014-07-09 14:46:39 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-07-10 01:16:48 +0400 |
| commit | 7276883f1f98cd0a92fdc049f69bdc0912f7fc16 (patch) | |
| tree | 6cd012e0005b3128c6034a5eb57c2dd95419b14a /drivers/misc/genwqe | |
| parent | d584f69d3217fb4336e58f14afca07d709b1c205 (diff) | |
| download | linux-7276883f1f98cd0a92fdc049f69bdc0912f7fc16.tar.xz | |
misc/GenWQE: fix pci_enable_msi usage
GenWQE used to call pci_enable_msi_block to allocate a desired number
of MSI's. If that was not possible pci_enable_msi_block returned with a
smaller number which might be possible to allocate. GenWQE then called
pci_enable_msi_block with that number.
Since commit a30d0108b
"GenWQE: Use pci_enable_msi_exact() instead of pci_enable_msi_block()"
pci_enable_msi_exact is used which fails if the desired number of MSI's
was not possible to allocate. Change GenWQE to use pci_enable_msi_range
to restore the old behavior.
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Reviewed-by: Alexander Gordeev <agordeev@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc/genwqe')
| -rw-r--r-- | drivers/misc/genwqe/card_ddcb.c | 4 | ||||
| -rw-r--r-- | drivers/misc/genwqe/card_utils.c | 10 |
2 files changed, 7 insertions, 7 deletions
diff --git a/drivers/misc/genwqe/card_ddcb.c b/drivers/misc/genwqe/card_ddcb.c index f0de6153bea2..dc9851a5540e 100644 --- a/drivers/misc/genwqe/card_ddcb.c +++ b/drivers/misc/genwqe/card_ddcb.c @@ -1251,9 +1251,7 @@ int genwqe_setup_service_layer(struct genwqe_dev *cd) } rc = genwqe_set_interrupt_capability(cd, GENWQE_MSI_IRQS); - if (rc > 0) - rc = genwqe_set_interrupt_capability(cd, rc); - if (rc != 0) { + if (rc) { rc = -ENODEV; goto stop_kthread; } diff --git a/drivers/misc/genwqe/card_utils.c b/drivers/misc/genwqe/card_utils.c index 4a500582eef0..a6400f09229c 100644 --- a/drivers/misc/genwqe/card_utils.c +++ b/drivers/misc/genwqe/card_utils.c @@ -728,10 +728,12 @@ int genwqe_set_interrupt_capability(struct genwqe_dev *cd, int count) int rc; struct pci_dev *pci_dev = cd->pci_dev; - rc = pci_enable_msi_exact(pci_dev, count); - if (rc == 0) - cd->flags |= GENWQE_FLAG_MSI_ENABLED; - return rc; + rc = pci_enable_msi_range(pci_dev, 1, count); + if (rc < 0) + return rc; + + cd->flags |= GENWQE_FLAG_MSI_ENABLED; + return 0; } /** |