From mboxrd@z Thu Jan 1 00:00:00 1970 From: Max Uvarov Subject: [PATCH] fdt: fix extend of cmd line Date: Wed, 13 Apr 2016 12:52:16 +0300 Message-ID: <1460541136-18385-1-git-send-email-muvarov@gmail.com> Return-path: Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Cc: devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, frowand.list-Re5JQEeQqe8@public.gmane.org, grant.likely-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org, Max Uvarov List-Id: devicetree@vger.kernel.org On arm CONFIG_CMDLINE_EXTEND does not append build-in cmdline in kernel to U-boot parameters. Fix it here. Theoretically this patch should repair kdump work where it adds elfcorehdr= and memmap additional parameters to second kernel. Signed-off-by: Max Uvarov --- drivers/of/fdt.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c index 3349d2a..5e897bf 100644 --- a/drivers/of/fdt.c +++ b/drivers/of/fdt.c @@ -969,10 +969,16 @@ int __init early_init_dt_scan_chosen(unsigned long node, const char *uname, * is set in which case we override whatever was found earlier. */ #ifdef CONFIG_CMDLINE -#ifndef CONFIG_CMDLINE_FORCE +#if defined(CONFIG_CMDLINE_EXTEND) + strlcat(data, " ", COMMAND_LINE_SIZE); + strlcat(data, CONFIG_CMDLINE, COMMAND_LINE_SIZE); +#elif defined(CONFIG_CMDLINE_FORCE) + strlcpy(data, CONFIG_CMDLINE, COMMAND_LINE_SIZE); +#else + /* No arguments from boot loader, use kernel's cmdl*/ if (!((char *)data)[0]) -#endif strlcpy(data, CONFIG_CMDLINE, COMMAND_LINE_SIZE); +#endif #endif /* CONFIG_CMDLINE */ pr_debug("Command line is: %s\n", (char*)data); -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html