diff mbox series

[4.19,10/52] PCI/switchtec: Fix vep_vector_number ioread width

Message ID 20200213151815.169868961@linuxfoundation.org
State Superseded
Headers show
Series None | expand

Commit Message

Greg Kroah-Hartman Feb. 13, 2020, 3:20 p.m. UTC 
From: Logan Gunthorpe <logang@deltatee.com>

commit 9375646b4cf03aee81bc6c305aa18cc80b682796 upstream.

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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/pci/switch/switchtec.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

--- a/drivers/pci/switch/switchtec.c
+++ b/drivers/pci/switch/switchtec.c
@@ -1186,7 +1186,7 @@  static int switchtec_init_isr(struct swi
 	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;