4.17-stable review patch. If anyone has any objections, please let me know.
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From: Laurentiu Tudor laurentiu.tudor@nxp.com
[ Upstream commit 0cdd431c337e99177e68597f3de34bedd3a20a74 ]
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@nxp.com Signed-off-by: Thomas Gleixner tglx@linutronix.de Cc: jason@lakedaemon.net Cc: marc.zyngier@arm.com Cc: zhiqiang.hou@nxp.com Cc: minghuan.lian@nxp.com Link: https://lkml.kernel.org/r/20180605122727.12831-1-laurentiu.tudor@nxp.com Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/irqchip/irq-ls-scfg-msi.c | 3 +++ 1 file changed, 3 insertions(+)
--- 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(stru
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,