[PATCH] irqchip/ls-scfg-msi: map MSIs in the iommu

From: Laurentiu Tudor
Date: Tue Jun 05 2018 - 08:36:48 EST


Add the required iommu_dma_map_msi_msg() when composing the MSI message,
otherwise the interrupts will not work.

Signed-off-by: Laurentiu Tudor <laurentiu.tudor@xxxxxxx>
---
drivers/irqchip/irq-ls-scfg-msi.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/irqchip/irq-ls-scfg-msi.c b/drivers/irqchip/irq-ls-scfg-msi.c
index 57e3d900f19e..1ec3bfe56693 100644
--- a/drivers/irqchip/irq-ls-scfg-msi.c
+++ b/drivers/irqchip/irq-ls-scfg-msi.c
@@ -21,6 +21,7 @@
#include <linux/of_pci.h>
#include <linux/of_platform.h>
#include <linux/spinlock.h>
+#include <linux/dma-iommu.h>

#define MSI_IRQS_PER_MSIR 32
#define MSI_MSIR_OFFSET 4
@@ -94,6 +95,8 @@ static void ls_scfg_msi_compose_msg(struct irq_data *data, struct msi_msg *msg)

if (msi_affinity_flag)
msg->data |= cpumask_first(data->common->affinity);
+
+ iommu_dma_map_msi_msg(data->irq, msg);
}

static int ls_scfg_msi_set_affinity(struct irq_data *irq_data,
--
2.17.0