From 9000eddbae0d292331ef403b0a1ff7ec7a983a79 Mon Sep 17 00:00:00 2001 From: Alexey Brodkin Date: Mon, 5 Jun 2017 22:31:51 +0300 Subject: [PATCH] drivers/usb/ehci: Use platform-specific accessors Current implementation doesn't allow utilization of platform-specific reads and writes. But some arches or platforms may want to use their accessors that do some extra work like adding barriers for data serialization etc. Interesting enough OHCI accessors already do that so just aligning EHCI to it now. This is a resend of http://patchwork.ozlabs.org/patch/726714/ Back in the day this patch broke some PPC and Sandbox boards as they we missing inclusion of "asm/io.h". Those missing items were fixed with: 1) http://patchwork.ozlabs.org/patch/751397/ 2) http://patchwork.ozlabs.org/patch/771099/ So now it should be safe to apply this patch. FWIW TravisCI builds everything with all 3 patches in place, see https://travis-ci.org/abrodkin/u-boot/builds/239563813 Signed-off-by: Alexey Brodkin Cc: Simon Glass Cc: Mateusz Kulikowski Acked-by: Marek Vasut --- drivers/usb/host/ehci.h | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h index 734d7f0362..2ab830df51 100644 --- a/drivers/usb/host/ehci.h +++ b/drivers/usb/host/ehci.h @@ -102,13 +102,11 @@ struct usb_linux_config_descriptor { } __attribute__ ((packed)); #if defined CONFIG_EHCI_DESC_BIG_ENDIAN -#define ehci_readl(x) cpu_to_be32((*((volatile u32 *)(x)))) -#define ehci_writel(a, b) (*((volatile u32 *)(a)) = \ - cpu_to_be32(((volatile u32)b))) +#define ehci_readl(x) cpu_to_be32(readl(x)) +#define ehci_writel(a, b) writel(cpu_to_be32(b), a) #else -#define ehci_readl(x) cpu_to_le32((*((volatile u32 *)(x)))) -#define ehci_writel(a, b) (*((volatile u32 *)(a)) = \ - cpu_to_le32(((volatile u32)b))) +#define ehci_readl(x) cpu_to_le32(readl(x)) +#define ehci_writel(a, b) writel(cpu_to_le32(b), a) #endif #if defined CONFIG_EHCI_MMIO_BIG_ENDIAN -- 2.25.1