linux-kernel - [PATCH 3.16 074/202] MIPS: OCTEON: don't set octeon_dma_bar

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Message-ID: <lsq.1556377989.524195039@decadent.org.uk>
Date:   Sat, 27 Apr 2019 16:13:09 +0100
From:   Ben Hutchings <ben@...adent.org.uk>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:     akpm@...ux-foundation.org, Denis Kirjanov <kda@...ux-powerpc.org>,
        "Paul Burton" <paul.burton@...s.com>, linux-mips@...r.kernel.org,
        "Aaro Koskinen" <aaro.koskinen@....fi>
Subject: [PATCH 3.16 074/202] MIPS: OCTEON: don't set octeon_dma_bar_type
 if PCI is disabled

3.16.66-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Aaro Koskinen <aaro.koskinen@....fi>

commit dcf300a69ac307053dfb35c2e33972e754a98bce upstream.

Don't set octeon_dma_bar_type if PCI is disabled. This avoids creation
of the MSI irqchip later on, and saves a bit of memory.

Signed-off-by: Aaro Koskinen <aaro.koskinen@....fi>
Signed-off-by: Paul Burton <paul.burton@...s.com>
Fixes: a214720cbf50 ("Disable MSI also when pcie-octeon.pcie_disable on")
Cc: linux-mips@...r.kernel.org
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 arch/mips/pci/pci-octeon.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

--- a/arch/mips/pci/pci-octeon.c
+++ b/arch/mips/pci/pci-octeon.c
@@ -575,6 +575,11 @@ static int __init octeon_pci_setup(void)
 	if (octeon_has_feature(OCTEON_FEATURE_PCIE))
 		return 0;
 
+	if (!octeon_is_pci_host()) {
+		pr_notice("Not in host mode, PCI Controller not initialized\n");
+		return 0;
+	}
+
 	/* Point pcibios_map_irq() to the PCI version of it */
 	octeon_pcibios_map_irq = octeon_pci_pcibios_map_irq;
 
@@ -586,11 +591,6 @@ static int __init octeon_pci_setup(void)
 	else
 		octeon_dma_bar_type = OCTEON_DMA_BAR_TYPE_BIG;
 
-	if (!octeon_is_pci_host()) {
-		pr_notice("Not in host mode, PCI Controller not initialized\n");
-		return 0;
-	}
-
 	/* PCI I/O and PCI MEM values */
 	set_io_port_base(OCTEON_PCI_IOSPACE_BASE);
 	ioport_resource.start = 0;