powerpc/powernv: Fix endian issues in OPAL ICS backend

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

1 files changed, 9 insertions, 8 deletions

diff --git a/arch/powerpc/sysdev/xics/ics-opal.c b/arch/powerpc/sysdev/xics/ics-opal.c
index 39d72212655e..3c6ee1b64e5d 100644
--- a/arch/powerpc/sysdev/xics/ics-opal.c
+++ b/arch/powerpc/sysdev/xics/ics-opal.c
@@ -112,6 +112,7 @@ static int ics_opal_set_affinity(struct irq_data *d,
                                  bool force)
 {
         unsigned int hw_irq = (unsigned int)irqd_to_hwirq(d);
+        __be16 oserver;
         int16_t server;
         int8_t priority;
         int64_t rc;
@@ -120,13 +121,13 @@ static int ics_opal_set_affinity(struct irq_data *d,
         if (hw_irq == XICS_IPI || hw_irq == XICS_IRQ_SPURIOUS)
                 return -1;
 
-        rc = opal_get_xive(hw_irq, &server, &priority);
+        rc = opal_get_xive(hw_irq, &oserver, &priority);
         if (rc != OPAL_SUCCESS) {
-                pr_err("%s: opal_set_xive(irq=%d [hw 0x%x] server=%x)"
-                       " error %lld\n",
-                       __func__, d->irq, hw_irq, server, rc);
+                pr_err("%s: opal_get_xive(irq=%d [hw 0x%x]) error %lld\n",
+                       __func__, d->irq, hw_irq, rc);
                 return -1;
         }
+        server = be16_to_cpu(oserver);
 
         wanted_server = xics_get_irq_server(d->irq, cpumask, 1);
         if (wanted_server < 0) {
@@ -181,7 +182,7 @@ static int ics_opal_map(struct ics *ics, unsigned int virq)
 {
         unsigned int hw_irq = (unsigned int)virq_to_hw(virq);
         int64_t rc;
-        int16_t server;
+        __be16 server;
         int8_t priority;
 
         if (WARN_ON(hw_irq == XICS_IPI || hw_irq == XICS_IRQ_SPURIOUS))
@@ -201,7 +202,7 @@ static int ics_opal_map(struct ics *ics, unsigned int virq)
 static void ics_opal_mask_unknown(struct ics *ics, unsigned long vec)
 {
         int64_t rc;
-        int16_t server;
+        __be16 server;
         int8_t priority;
 
         /* Check if HAL knows about this interrupt */
@@ -215,14 +216,14 @@ static void ics_opal_mask_unknown(struct ics *ics, unsigned long vec)
 static long ics_opal_get_server(struct ics *ics, unsigned long vec)
 {
         int64_t rc;
-        int16_t server;
+        __be16 server;
         int8_t priority;
 
         /* Check if HAL knows about this interrupt */
         rc = opal_get_xive(vec, &server, &priority);
         if (rc != OPAL_SUCCESS)
                 return -1;
-        return ics_opal_unmangle_server(server);
+        return ics_opal_unmangle_server(be16_to_cpu(server));
 }
 
 int __init ics_opal_init(void)