[PATCH v2 1/6] fsl-mc: Remove MSI domain propagation to sub-devices
From: Marc Zyngier <maz@kernel.org>
Date: 2026-02-24 10:09:48
Also in:
linuxppc-dev, lkml
Subsystem:
qoriq dpaa2 fsl-mc bus driver, the rest · Maintainers:
Ioana Ciornei, Linus Torvalds
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 <redacted> 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