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