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Tue, 24 Feb 2026 10:09:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1771927788; bh=fmwZsFG2mQswj1CldtERGx0gFVuT8PrD6fuT1n1QemU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=NoLxYcXTduxMnD3ZooqViNnlsEONuJq50yjwPk0tTRncHahzVysOljAseB1CKQRIk oqwJ1hkig04D+WIwo8Muu17MfuSDJV6mXCX5421jci1Qw2LYqd1lUqFtShxvVJc4LI zixlu6I2cs5OC/kPHuFl2U+B2hivY5OXREULVDbAImtY85VY3qhMbA0Iy3LrGsK2TK BI9Frt6ABWCWr0LsLaxPJHw3knTlQLBarOvil7jA8GOa4m5mQaBhz/O0PuSaCJFWV7 7Nt2PZJp00f37BGBHKXn5wT91YbA/MHsPVq2AjiMh28PM/1pWleS00Q5B491ZZvnWQ U4Od+RgQSviPA== Received: from sofa.misterjones.org ([185.219.108.64] helo=valley-girl.lan) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.98.2) (envelope-from ) id 1vupMQ-0000000DIa5-27eJ; Tue, 24 Feb 2026 10:09:46 +0000 From: Marc Zyngier To: Ioana Ciornei , Thomas Gleixner , "Christophe Leroy (CS GROUP)" Cc: Sascha Bischoff , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linuxppc-dev@lists.ozlabs.org Subject: [PATCH v2 4/6] fsl-mc: Switch over to per-device platform MSI Date: Tue, 24 Feb 2026 10:09:34 +0000 Message-ID: <20260224100936.3752303-5-maz@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260224100936.3752303-1-maz@kernel.org> References: <20260224100936.3752303-1-maz@kernel.org> X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: ioana.ciornei@nxp.com, tglx@kernel.org, chleroy@kernel.org, sascha.bischoff@arm.com, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linuxppc-dev@lists.ozlabs.org X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false Obtain the msi-parent irqdomain instead of the fsl_mc domain, which magically engages the per-device infrastructure. Additionally, simplify the overly complicated error handling. Reviewed-by: Ioana Ciornei Tested-by: Ioana Ciornei # LX2160ARDB, LS2088ARDB Tested-by: Sascha Bischoff Signed-off-by: Marc Zyngier --- drivers/bus/fsl-mc/dprc-driver.c | 14 +++++--------- 1 file changed, 5 insertions(+), 9 deletions(-) diff --git a/drivers/bus/fsl-mc/dprc-driver.c b/drivers/bus/fsl-mc/dprc-driver.c index db67442addad2..a85706826fa06 100644 --- a/drivers/bus/fsl-mc/dprc-driver.c +++ b/drivers/bus/fsl-mc/dprc-driver.c @@ -609,9 +609,8 @@ int dprc_setup(struct fsl_mc_device *mc_dev) { struct device *parent_dev = mc_dev->dev.parent; struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_dev); - struct irq_domain *mc_msi_domain; + struct irq_domain *mc_msi_domain = NULL; bool mc_io_created = false; - bool msi_domain_set = false; bool uapi_created = false; u16 major_ver, minor_ver; size_t region_size; @@ -652,14 +651,12 @@ int dprc_setup(struct fsl_mc_device *mc_dev) uapi_created = true; } - mc_msi_domain = fsl_mc_find_msi_domain(&mc_dev->dev); - if (!mc_msi_domain) { + mc_msi_domain = fsl_mc_get_msi_parent(&mc_dev->dev); + if (!mc_msi_domain) dev_warn(&mc_dev->dev, "WARNING: MC bus without interrupt support\n"); - } else { + else dev_set_msi_domain(&mc_dev->dev, mc_msi_domain); - msi_domain_set = true; - } error = dprc_open(mc_dev->mc_io, 0, mc_dev->obj_desc.id, &mc_dev->mc_handle); @@ -699,8 +696,7 @@ int dprc_setup(struct fsl_mc_device *mc_dev) (void)dprc_close(mc_dev->mc_io, 0, mc_dev->mc_handle); error_cleanup_msi_domain: - if (msi_domain_set) - dev_set_msi_domain(&mc_dev->dev, NULL); + dev_set_msi_domain(&mc_dev->dev, NULL); if (mc_io_created) { fsl_destroy_mc_io(mc_dev->mc_io); -- 2.47.3