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GET /api/1.1/patches/2222649/?format=api
{ "id": 2222649, "url": "http://patchwork.ozlabs.org/api/1.1/patches/2222649/?format=api", "web_url": "http://patchwork.ozlabs.org/project/uboot/patch/20260413092240.3719260-3-daniel@thingy.jp/", "project": { "id": 18, "url": "http://patchwork.ozlabs.org/api/1.1/projects/18/?format=api", "name": "U-Boot", "link_name": "uboot", "list_id": "u-boot.lists.denx.de", "list_email": "u-boot@lists.denx.de", "web_url": null, "scm_url": null, "webscm_url": null }, "msgid": "<20260413092240.3719260-3-daniel@thingy.jp>", "date": "2026-04-13T09:22:36", "name": "[v4,2/6] m68k: Fix writew(), writel(), readw(), readl() endianness for classic m68k", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "5117c14e91c3aea0f794a1c0247b339c70afc45d", "submitter": { "id": 85408, "url": "http://patchwork.ozlabs.org/api/1.1/people/85408/?format=api", "name": "Daniel Palmer", "email": "daniel@thingy.jp" }, "delegate": { "id": 14103, "url": "http://patchwork.ozlabs.org/api/1.1/users/14103/?format=api", "username": "spectrum", "first_name": "Angelo", "last_name": "Dureghello", "email": "sysamfw@gmail.com" }, "mbox": "http://patchwork.ozlabs.org/project/uboot/patch/20260413092240.3719260-3-daniel@thingy.jp/mbox/", "series": [ { "id": 499674, "url": "http://patchwork.ozlabs.org/api/1.1/series/499674/?format=api", "web_url": "http://patchwork.ozlabs.org/project/uboot/list/?series=499674", "date": "2026-04-13T09:22:34", "name": "Add virtio-mmio support to m68k virt machine", "version": 4, "mbox": "http://patchwork.ozlabs.org/series/499674/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2222649/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2222649/checks/", "tags": {}, "headers": { "Return-Path": "<u-boot-bounces@lists.denx.de>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=thingy.jp header.i=@thingy.jp header.a=rsa-sha256\n header.s=google header.b=hCzldwn8;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de\n (client-ip=85.214.62.61; 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Coldfire has read big-endian,\nno swap for these in u-boot and Linux and existing drivers probably\ndepend on this.\n\nSigned-off-by: Daniel Palmer <daniel@thingy.jp>\nTested-by: Angelo Dureghello <angelo@kernel-space.org>\nReviewed-by: Simon Glass <sjg@chromium.org>\n---\n arch/m68k/include/asm/io.h | 31 ++++++++++++++++++++-----------\n 1 file changed, 20 insertions(+), 11 deletions(-)", "diff": "diff --git a/arch/m68k/include/asm/io.h b/arch/m68k/include/asm/io.h\nindex 35ad4a1c0444..2577081d8363 100644\n--- a/arch/m68k/include/asm/io.h\n+++ b/arch/m68k/include/asm/io.h\n@@ -23,18 +23,27 @@\n #define __raw_writew(w,addr) ((*(volatile u16 *) (addr)) = (w))\n #define __raw_writel(l,addr) ((*(volatile u32 *) (addr)) = (l))\n \n-#define readb(addr)\t\tin_8((volatile u8 *)(addr))\n-#define writeb(b,addr)\t\tout_8((volatile u8 *)(addr), (b))\n-#if !defined(__BIG_ENDIAN)\n-#define readw(addr)\t\t(*(volatile u16 *) (addr))\n-#define readl(addr)\t\t(*(volatile u32 *) (addr))\n-#define writew(b,addr)\t\t((*(volatile u16 *) (addr)) = (b))\n-#define writel(b,addr)\t\t((*(volatile u32 *) (addr)) = (b))\n+#define readb(addr)\tin_8((volatile u8 *)(addr))\n+#define writeb(b, addr)\tout_8((volatile u8 *)(addr), (b))\n+#ifdef CONFIG_M680x0\n+/*\n+ * For classic m68k these work the same way as Linux:\n+ * Read a little endian value, swap to the CPU endian.\n+ */\n+#define readw(addr)\tin_le16((volatile u16 *)(addr))\n+#define readl(addr)\tin_le32((volatile u32 *)(addr))\n+#define writew(b, addr)\tout_le16((volatile u16 *)(addr), (b))\n+#define writel(b, addr)\tout_le32((volatile u32 *)(addr), (b))\n #else\n-#define readw(addr)\t\tin_be16((volatile u16 *)(addr))\n-#define readl(addr)\t\tin_be32((volatile u32 *)(addr))\n-#define writew(b,addr)\t\tout_be16((volatile u16 *)(addr),(b))\n-#define writel(b,addr)\t\tout_be32((volatile u32 *)(addr),(b))\n+/*\n+ * For coldfire these read a big endian value and use it\n+ * as-is. This means that for little endian devices on the\n+ * bus like PCI device these won't work as expected currently.\n+ */\n+#define readw(addr)\tin_be16((volatile u16 *)(addr))\n+#define readl(addr)\tin_be32((volatile u32 *)(addr))\n+#define writew(b, addr)\tout_be16((volatile u16 *)(addr), (b))\n+#define writel(b, addr)\tout_be32((volatile u32 *)(addr), (b))\n #endif\n \n /*\n", "prefixes": [ "v4", "2/6" ] }