2019-09-19 14:43:19 +00:00
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From e13c663bfc75a628ba25afdf3f3b4a40a2c0250e Mon Sep 17 00:00:00 2001
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2019-07-09 18:32:28 +00:00
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From: P33M <p33m@github.com>
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Date: Wed, 1 May 2019 15:00:05 +0100
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2019-09-19 14:43:19 +00:00
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Subject: [PATCH 475/806] dts: Increase default coherent pool size
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2019-07-09 18:32:28 +00:00
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dwc_otg allocates DMA-coherent buffers in atomic context for misaligned
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transfer buffers. The pool that these allocations come from is set up
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at boot-time but can be overridden by a commandline parameter -
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increase this for now to prevent failures seen on 4.19 with multiple
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USB Ethernet devices.
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see: https://github.com/raspberrypi/linux/issues/2924
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---
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arch/arm/boot/dts/bcm270x.dtsi | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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--- a/arch/arm/boot/dts/bcm270x.dtsi
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+++ b/arch/arm/boot/dts/bcm270x.dtsi
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@@ -3,7 +3,7 @@
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/ {
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chosen {
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- bootargs = "";
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+ bootargs = "coherent_pool=1M";
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/delete-property/ stdout-path;
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};
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