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From:   Christoph Hellwig <hch@lst.de>
To:     Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc:     linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org,
        iommu@lists.linux-foundation.org
Subject: [PATCH 3/6] MIPS: move the {no,}nocoherentio options to the malta setup code
Date:   Mon,  8 Feb 2021 15:50:21 +0100
Message-Id: <20210208145024.3320420-4-hch@lst.de>
In-Reply-To: <20210208145024.3320420-1-hch@lst.de>
References: <20210208145024.3320420-1-hch@lst.de>
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There are only two MIPS platforms that are conditionally DMA coherent.
Of those alchemcy forces the coherentcy base on the platform, while
malta allows a mix of hardware defaults and manual overrides.  Move the
command line options for these overrides to the malta setup code, as
they can't have an effect for alchemy.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 arch/mips/kernel/setup.c          | 16 ----------------
 arch/mips/mti-malta/malta-setup.c | 16 ++++++++++++++++
 2 files changed, 16 insertions(+), 16 deletions(-)

diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
index 7e1f8e2774373d..8e205a4e18c27b 100644
--- a/arch/mips/kernel/setup.c
+++ b/arch/mips/kernel/setup.c
@@ -811,20 +811,4 @@ arch_initcall(debugfs_mips);
 enum coherent_io_user_state coherentio = IO_COHERENCE_DEFAULT;
 EXPORT_SYMBOL_GPL(coherentio);
 int hw_coherentio;	/* Actual hardware supported DMA coherency setting. */
-
-static int __init setcoherentio(char *str)
-{
-	coherentio = IO_COHERENCE_ENABLED;
-	pr_info("Hardware DMA cache coherency (command line)\n");
-	return 0;
-}
-early_param("coherentio", setcoherentio);
-
-static int __init setnocoherentio(char *str)
-{
-	coherentio = IO_COHERENCE_DISABLED;
-	pr_info("Software DMA cache coherency (command line)\n");
-	return 0;
-}
-early_param("nocoherentio", setnocoherentio);
 #endif
diff --git a/arch/mips/mti-malta/malta-setup.c b/arch/mips/mti-malta/malta-setup.c
index f3fec5a5a07c76..33449a2692c3a3 100644
--- a/arch/mips/mti-malta/malta-setup.c
+++ b/arch/mips/mti-malta/malta-setup.c
@@ -90,6 +90,22 @@ static void __init fd_activate(void)
 }
 #endif
 
+static int __init setcoherentio(char *str)
+{
+	coherentio = IO_COHERENCE_ENABLED;
+	pr_info("Hardware DMA cache coherency (command line)\n");
+	return 0;
+}
+early_param("coherentio", setcoherentio);
+
+static int __init setnocoherentio(char *str)
+{
+	coherentio = IO_COHERENCE_DISABLED;
+	pr_info("Software DMA cache coherency (command line)\n");
+	return 0;
+}
+early_param("nocoherentio", setnocoherentio);
+
 static void __init plat_setup_iocoherency(void)
 {
 	int supported = 0;
-- 
2.29.2