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PCI/switchtec: Fix vep_vector_number ioread width

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commit 9375646b4cf03aee81bc6c305aa18cc80b682796 upstream.

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

Fixes: 080b47def5 ("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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Logan Gunthorpe 2020-01-06 12:03:27 -07:00 • committed by Greg Kroah-Hartman
commit df26f04f23
1 changed files with 1 additions and 1 deletions
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2
drivers/pci/switch/switchtec.c
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@ -1276,7 +1276,7 @@ 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;