Patchwork [v3,01/11] PCI/MSI/s390: Fix single MSI only check

login
register
mail settings
Submitter Alexander Gordeev
Date Nov. 26, 2013, 9:09 a.m.
Message ID <4a3fc109c984d74340d70f0053ec7e3d3263939a.1385399393.git.agordeev@redhat.com>
Download mbox | patch
Permalink /patch/294402/
State Changes Requested
Headers show

Comments

Alexander Gordeev - Nov. 26, 2013, 9:09 a.m.
Multiple MSIs have never been supported on s390 architecture,
but the platform code fails to report single MSI only.

Signed-off-by: Alexander Gordeev <agordeev@redhat.com>
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---
 arch/s390/pci/pci.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

Patch

diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c
index f17a834..c79c6e4 100644
--- a/arch/s390/pci/pci.c
+++ b/arch/s390/pci/pci.c
@@ -427,6 +427,8 @@  int arch_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type)
 	pr_debug("%s: requesting %d MSI-X interrupts...", __func__, nvec);
 	if (type != PCI_CAP_ID_MSIX && type != PCI_CAP_ID_MSI)
 		return -EINVAL;
+	if (type == PCI_CAP_ID_MSI && nvec > 1)
+		return 1;
 	msi_vecs = min(nvec, ZPCI_MSI_VEC_MAX);
 	msi_vecs = min_t(unsigned int, msi_vecs, CONFIG_PCI_NR_MSI);