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From:   Bharat Bhushan <bharat.bhushan@nxp.com>
To:     Laurentiu Tudor <laurentiu.tudor@nxp.com>,
        "tglx@linutronix.de" <tglx@linutronix.de>,
        "jason@lakedaemon.net" <jason@lakedaemon.net>,
        "marc.zyngier@arm.com" <marc.zyngier@arm.com>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
CC:     "M.h. Lian" <minghuan.lian@nxp.com>,
        "Z.q. Hou" <zhiqiang.hou@nxp.com>,
        Laurentiu Tudor <laurentiu.tudor@nxp.com>
Subject: RE: [upstream-release] [PATCH] irqchip/ls-scfg-msi: map MSIs in the
        iommu
Thread-Topic: [upstream-release] [PATCH] irqchip/ls-scfg-msi: map MSIs in the
        iommu
Thread-Index: AQHT/Mih0MoTX0EdZEikhL0A/sqXxaRTBiIQ
Date:   Wed, 6 Jun 2018 10:23:37 +0000
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> -----Original Message-----
> From: upstream-release-bounces@linux.freescale.net [mailto:upstream-
> release-bounces@linux.freescale.net] On Behalf Of Laurentiu Tudor
> Sent: Tuesday, June 5, 2018 5:57 PM
> To: tglx@linutronix.de; jason@lakedaemon.net; marc.zyngier@arm.com; linux=
-
> kernel@vger.kernel.org
> Cc: M.h. Lian <minghuan.lian@nxp.com>; Z.q. Hou <zhiqiang.hou@nxp.com>;
> Laurentiu Tudor <laurentiu.tudor@nxp.com>
> Subject: [upstream-release] [PATCH] irqchip/ls-scfg-msi: map MSIs in the =
iommu
>=20
> Add the required iommu_dma_map_msi_msg() when composing the MSI
> message, otherwise the interrupts will not work.
>=20
> Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>

Reviewed-by: Bharat Bhushan <bharat.bhushan@nxp.com>

Thanks
-Bharat
> ---
>  drivers/irqchip/irq-ls-scfg-msi.c | 3 +++
>  1 file changed, 3 insertions(+)
>=20
> diff --git a/drivers/irqchip/irq-ls-scfg-msi.c b/drivers/irqchip/irq-ls-s=
cfg-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>
>=20
>  #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)
>=20
>  	if (msi_affinity_flag)
>  		msg->data |=3D cpumask_first(data->common->affinity);
> +
> +	iommu_dma_map_msi_msg(data->irq, msg);
>  }
>=20
>  static int ls_scfg_msi_set_affinity(struct irq_data *irq_data,
> --
> 2.17.0
>=20
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