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Subject[PATCH AUTOSEL 4.14 021/186] PCI/switchtec: Fix vep_vector_number ioread width
Date
From: Logan Gunthorpe <logang@deltatee.com>

[ Upstream commit 9375646b4cf03aee81bc6c305aa18cc80b682796 ]

vep_vector_number is actually a 16 bit register which should be read with
ioread16() instead of ioread32().

Fixes: 080b47def5e5 ("MicroSemi Switchtec management interface driver")
Link: https://lore.kernel.org/r/20200106190337.2428-3-logang@deltatee.com
Reported-by: Doug Meyer <dmeyer@gigaio.com>
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/pci/switch/switchtec.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pci/switch/switchtec.c b/drivers/pci/switch/switchtec.c
index 73dba2739849b..bf229b442e723 100644
--- a/drivers/pci/switch/switchtec.c
+++ b/drivers/pci/switch/switchtec.c
@@ -1399,7 +1399,7 @@ static int switchtec_init_isr(struct switchtec_dev *stdev)
if (nvecs < 0)
return nvecs;

- event_irq = ioread32(&stdev->mmio_part_cfg->vep_vector_number);
+ event_irq = ioread16(&stdev->mmio_part_cfg->vep_vector_number);
if (event_irq < 0 || event_irq >= nvecs)
return -EFAULT;

--
2.20.1
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