Merge tag 'iommu-fixes-v4.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git...

[karo-tx-linux.git] / drivers / irqchip / irq-gic-v3-its.c

diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c
index 26b55c53755f0db82c5b4cbcd1c16a9beb5c5109..25ceae9f7348b3208bdd6dec0048a88d4ce34f73 100644 (file)
--- a/drivers/irqchip/irq-gic-v3-its.c
+++ b/drivers/irqchip/irq-gic-v3-its.c
@@ -719,6 +719,9 @@ static unsigned long *its_lpi_alloc_chunks(int nr_irqs, int *base, int *nr_ids)
 out:
        spin_unlock(&lpi_lock);
 
+       if (!bitmap)
+               *base = *nr_ids = 0;
+
        return bitmap;
 }
 
@@ -898,8 +901,10 @@ retry_baser:
                         * non-cacheable as well.
                         */
                        shr = tmp & GITS_BASER_SHAREABILITY_MASK;
-                       if (!shr)
+                       if (!shr) {
                                cache = GITS_BASER_nC;
+                               __flush_dcache_area(base, alloc_size);
+                       }
                        goto retry_baser;
                }
 
@@ -1140,6 +1145,8 @@ static struct its_device *its_create_device(struct its_node *its, u32 dev_id,
                return NULL;
        }
 
+       __flush_dcache_area(itt, sz);
+
        dev->its = its;
        dev->itt = itt;
        dev->nr_ites = nr_ites;