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authorChristoph Hellwig <hch@lst.de>2016-11-18 16:09:06 +0300
committerTejun Heo <tj@kernel.org>2016-11-21 19:06:57 +0300
commit6929ef385e09c0065b87fda3e7b872a5070ac783 (patch)
tree84f6b678d92409233aefde692da6db665d547d1b /drivers/ata/ahci.c
parente0029dcb5b6e1c23e68f578ce7a3d6c5caba0501 (diff)
downloadlinux-6929ef385e09c0065b87fda3e7b872a5070ac783.tar.xz
ahci: always fall back to single-MSI mode
Don't try to guess what the errors from pci_irq_alloc_vectors mean, as that's too fragile. Instead always try allocating a single vector when multi-MSI mode fails. This makes various intel Desktop and Laptop CPUs use MSI again. Signed-off-by: Christoph Hellwig <hch@lst.de> Reported-by: Michael Marley <michael@michaelmarley.com> Tested-by: Michael Marley <michael@michaelmarley.com> Fixes: 0b9e2988ab22 ("ahci: use pci_alloc_irq_vectors") Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'drivers/ata/ahci.c')
-rw-r--r--drivers/ata/ahci.c7
1 files changed, 0 insertions, 7 deletions
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index 9669fc7c19df..74f4c662f776 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -1436,13 +1436,6 @@ 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;
}
/*