diff options
| author | Christoph Hellwig <hch@lst.de> | 2016-10-20 17:15:41 +0200 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2016-10-20 19:40:14 +0200 |
| commit | a478b097474cd9f2268ab1beaca74ff09e652b9b (patch) | |
| tree | cfc4712ffb2d1edfa7b762f0c8272e71297dc27c | |
| parent | ahci: only try to use multi-MSI mode if there is more than 1 port (diff) | |
| download | linux-a478b097474cd9f2268ab1beaca74ff09e652b9b.tar.xz linux-a478b097474cd9f2268ab1beaca74ff09e652b9b.zip | |
ahci: fix nvec check
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-and-reviewed-by Colin Ian King <colin.king@canonical.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
| -rw-r--r-- | drivers/ata/ahci.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index ed311a040fed..60e42e2ed68f 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 |