[PATCH 2/8] CMDLINE: drivers: of: ifdef out cmdline section

From: Daniel Walker <danielwa@cisco.com>
To: Will Deacon <will@kernel.org>,
	Christophe Leroy <christophe.leroy@csgroup.eu>,
	ob Herring <robh@kernel.org>,
	Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>,
	Andrew Morton <akpm@linux-foundation.org>,
	x86@kernel.org, linux-mips@vger.kernel.org,
	linuxppc-dev@lists.ozlabs.org, Rob Herring <robh+dt@kernel.org>,
	Frank Rowand <frowand.list@gmail.com>
Cc: xe-linux-external@cisco.com,
	Ruslan Ruslichenko <rruslich@cisco.com>,
	devicetree@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH 2/8] CMDLINE: drivers: of: ifdef out cmdline section
Date: Tue, 30 Mar 2021 10:56:57 -0700	[thread overview]
Message-ID: <0c4b839f023f87c451c8aa3c4f7a8d92729c2f02.1617126961.git.danielwa@cisco.com> (raw)
In-Reply-To: <41021d66db2ab427c14255d2a24bb4517c8b58fd.1617126961.git.danielwa@cisco.com>

It looks like there's some seepage of cmdline stuff into
the generic device tree code. This conflicts with the
generic cmdline implementation so I remove it in the case
when that's enabled.

Cc: xe-linux-external@cisco.com
Signed-off-by: Ruslan Ruslichenko <rruslich@cisco.com>
Signed-off-by: Daniel Walker <danielwa@cisco.com>
---
 drivers/of/fdt.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
index dcc1dd96911a..d8805cd9717a 100644
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -25,6 +25,7 @@
 #include <linux/serial_core.h>
 #include <linux/sysfs.h>
 #include <linux/random.h>
+#include <linux/cmdline.h>
 
 #include <asm/setup.h>  /* for COMMAND_LINE_SIZE */
 #include <asm/page.h>
@@ -1050,6 +1051,18 @@ int __init early_init_dt_scan_chosen(unsigned long node, const char *uname,
 
 	/* Retrieve command line */
 	p = of_get_flat_dt_prop(node, "bootargs", &l);
+
+#if defined(CONFIG_GENERIC_CMDLINE) && defined(CONFIG_GENERIC_CMDLINE_OF)
+	/*
+	 * The builtin command line will be added here, or it can override
+	 * with the DT bootargs.
+	 */
+	cmdline_add_builtin(data,
+			    (l > 0 ? p : NULL), /* This is sanity checking */
+			    COMMAND_LINE_SIZE);
+#elif defined(CONFIG_GENERIC_CMDLINE)
+	strlcpy(data, p, COMMAND_LINE_SIZE);
+#else
 	if (p != NULL && l > 0)
 		strlcpy(data, p, min(l, COMMAND_LINE_SIZE));
 
@@ -1070,6 +1083,7 @@ int __init early_init_dt_scan_chosen(unsigned long node, const char *uname,
 		strlcpy(data, CONFIG_CMDLINE, COMMAND_LINE_SIZE);
 #endif
 #endif /* CONFIG_CMDLINE */
+#endif /* CONFIG_GENERIC_CMDLINE */
 
 	pr_debug("Command line is: %s\n", (char *)data);
 
-- 
2.25.1

