commit 17a51f12 ("ahci: only try to use multi-MSI mode if there is more
than 1 port") lead to a case where nvec isn't initialized before it's
used. Fix this by moving the check into the n_ports conditional.
Reported-by Colin Ian King <colin.king@xxxxxxxxxxxxx>
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
drivers/ata/ahci.c | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index ed311a0..60e42e2 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -1436,14 +1436,14 @@ static int ahci_init_msi(struct pci_dev *pdev, unsigned int n_ports,
"ahci: MRSM is on, fallback to single MSI\n");
pci_free_irq_vectors(pdev);
}
- }
- /*
- * -ENOSPC indicated we don't have enough vectors. Don't bother trying
- * a single vectors for any other error:
- */
- if (nvec < 0 && nvec != -ENOSPC)
- return nvec;
+ /*
+ * -ENOSPC indicated we don't have enough vectors. Don't bother
+ * trying a single vectors for any other error:
+ */
+ if (nvec < 0 && nvec != -ENOSPC)
+ return nvec;
+ }
/*
* If the host is not capable of supporting per-port vectors, fall
--
2.1.4
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