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From: Marc Zyngier <maz@kernel.org>
To: Ioana Ciornei <ioana.ciornei@nxp.com>,
	Thomas Gleixner <tglx@kernel.org>,
	"Christophe Leroy (CS GROUP)" <chleroy@kernel.org>
Cc: Sascha Bischoff <sascha.bischoff@arm.com>,
	linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linuxppc-dev@lists.ozlabs.org
Subject: [PATCH v2 1/6] fsl-mc: Remove MSI domain propagation to sub-devices
Date: Tue, 24 Feb 2026 10:09:31 +0000	[thread overview]
Message-ID: <20260224100936.3752303-2-maz@kernel.org> (raw)
In-Reply-To: <20260224100936.3752303-1-maz@kernel.org>

Only the root device generates MSIs (it is the only one talking to
the ITS), so propagating the domain is pretty pointless. Remove it.

Reviewed-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Tested-by: Ioana Ciornei <ioana.ciornei@nxp.com> # LX2160ARDB, LS2088ARDB
Tested-by: Sascha Bischoff <sascha.bischoff@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
---
 drivers/bus/fsl-mc/fsl-mc-bus.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/bus/fsl-mc/fsl-mc-bus.c b/drivers/bus/fsl-mc/fsl-mc-bus.c
index c117745cf2065..1a6c8e3c0b27f 100644
--- a/drivers/bus/fsl-mc/fsl-mc-bus.c
+++ b/drivers/bus/fsl-mc/fsl-mc-bus.c
@@ -854,14 +854,12 @@ int fsl_mc_device_add(struct fsl_mc_obj_desc *obj_desc,
 	} else {
 		/*
 		 * A non-DPRC object has to be a child of a DPRC, use the
-		 * parent's ICID and interrupt domain.
+		 * parent's ICID.
 		 */
 		mc_dev->icid = parent_mc_dev->icid;
 		mc_dev->dma_mask = FSL_MC_DEFAULT_DMA_MASK;
 		mc_dev->dev.dma_mask = &mc_dev->dma_mask;
 		mc_dev->dev.coherent_dma_mask = mc_dev->dma_mask;
-		dev_set_msi_domain(&mc_dev->dev,
-				   dev_get_msi_domain(&parent_mc_dev->dev));
 	}
 
 	/*
-- 
2.47.3



  reply	other threads:[~2026-02-24 10:09 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-02-24 10:09 [PATCH v2 0/6] fsl-mc: Move over to device MSI infrastructure Marc Zyngier
2026-02-24 10:09 ` Marc Zyngier [this message]
2026-02-24 10:09 ` [PATCH v2 2/6] fsl-mc: Add minimal infrastructure to use platform MSI Marc Zyngier
2026-02-24 10:09 ` [PATCH v2 3/6] irqchip/gic-v3-its: Add fsl_mc device plumbing to the msi-parent handling Marc Zyngier
2026-02-24 10:09 ` [PATCH v2 4/6] fsl-mc: Switch over to per-device platform MSI Marc Zyngier
2026-02-24 10:09 ` [PATCH v2 5/6] fsl-mc: Remove legacy MSI implementation Marc Zyngier
2026-02-24 10:09 ` [PATCH v2 6/6] platform-msi: Remove stale comment Marc Zyngier
2026-02-24 16:15 ` [PATCH v2 0/6] fsl-mc: Move over to device MSI infrastructure Thomas Gleixner
2026-02-26  9:50 ` Christophe Leroy (CS GROUP)

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