[PATCH hurd] acpi: Better error handling on S_acpi_get_pci_irq

[Damien Zammit via Bug reports for the GNU Hurd]

This internal function acpi_get_irq_number() returns negative for
error, otherwise returns valid IRQ.

---
 acpi/acpi-ops.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/acpi/acpi-ops.c b/acpi/acpi-ops.c
index 1aaec10c..16d96e71 100644
--- a/acpi/acpi-ops.c
+++ b/acpi/acpi-ops.c
@@ -73,6 +73,7 @@ S_acpi_get_pci_irq (struct protid *master,
                    int *irq)
 {
   error_t err;
+  int ret;
 
   if (!master)
     return EOPNOTSUPP;
@@ -81,6 +82,10 @@ S_acpi_get_pci_irq (struct protid *master,
   if (err)
     return err;
 
-  *irq = acpi_get_irq_number(bus, dev, func);
-  return err;
+  ret = acpi_get_irq_number(bus, dev, func);
+  if (ret < 0)
+    return EIO;
+
+  *irq = ret;
+  return 0;
 }
-- 
2.45.2