From: Alexander Gordeev <agord...@redhat.com>
3.12-stable review patch. If anyone has any objections, please let me know.
===============
commit 2adc7907bac2c72535894732c4b41f9210f9e577 upstream.
If populate_msi_sysfs() function failed msix_capability_init() must return
the error code, but it returns the success instead. This update fixes the
described misbehaviour.
Signed-off-by: Alexander Gordeev <agord...@redhat.com>
Signed-off-by: Bjorn Helgaas <bhelg...@google.com>
Reviewed-by: Tejun Heo <t...@kernel.org>
Signed-off-by: Jiri Slaby <jsl...@suse.cz>
---
drivers/pci/msi.c | 11 +++++------
1 file changed, 5 insertions(+), 6 deletions(-)
diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c
index d5f90d6383bc..b43f391dc8b6 100644
--- a/drivers/pci/msi.c
+++ b/drivers/pci/msi.c
@@ -719,7 +719,7 @@ static int msix_capability_init(struct pci_dev *dev,
ret = arch_setup_msi_irqs(dev, nvec, PCI_CAP_ID_MSIX);
if (ret)
- goto error;
+ goto out_avail;
/*
* Some devices require MSI-X to be enabled before we can touch the
@@ -732,10 +732,8 @@ static int msix_capability_init(struct pci_dev *dev,
msix_program_entries(dev, entries);
ret = populate_msi_sysfs(dev);
- if (ret) {
- ret = 0;
- goto error;
- }
+ if (ret)
+ goto out_free;
/* Set MSI-X enabled bits and unmask the function */
pci_intx_for_msi(dev, 0);
@@ -746,7 +744,7 @@ static int msix_capability_init(struct pci_dev *dev,
return 0;
-error:
+out_avail:
if (ret < 0) {
/*
* If we had some success, report the number of irqs
@@ -763,6 +761,7 @@ error:
ret = avail;
}
+out_free:
free_msi_irqs(dev);
return ret;
--
2.1.3
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