Using mtdblock as root device

[Robert Kaiser <rob@sysgo.de>]

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Hi,

I just tried to build a system that uses jffs on /dev/mtdblock0 as root fs.
This didn't work right away because the kernel did not honor the option
"root=/dev/mtdblock0" . This is because mtdblock devices are not listed
in the list of known root devices in the kernel (see "root_dev_names" in file
init/main.c). After applying the attached patch, using mtdblock as rootfs
worked nicely.

Now my question is: is there any particular reason (other than "nobody has
told Linus") why this is not already in the standard kernel ?

If there isn't, should I go ahead and submit my patch to Linus ?


Cheers

Rob


----------------------------------------------------------------
Robert Kaiser                         email: rkaiser@sysgo.de
SYSGO RTS GmbH
Am Pfaffenstein 14                    phone: (49) 6136 9948-762
D-55270 Klein-Winternheim / Germany   fax:   (49) 6136 9948-10

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--- linux/init/main.c.orig	Thu Jan  4 05:45:26 2001
+++ linux/init/main.c	Tue Mar  6 12:57:00 2001
@@ -273,6 +273,24 @@
 #ifdef CONFIG_NFTL
 	{ "nftla", 0x5d00 },
 #endif
+#ifdef CONFIG_MTD
+	{ "mtdblock0", 0x1f00 },
+	{ "mtdblock1", 0x1f01 },
+	{ "mtdblock2", 0x1f02 },
+	{ "mtdblock3", 0x1f03 },
+	{ "mtdblock4", 0x1f04 },
+	{ "mtdblock5", 0x1f05 },
+	{ "mtdblock6", 0x1f06 },
+	{ "mtdblock7", 0x1f07 },
+	{ "mtdblock8", 0x1f08 },
+	{ "mtdblock9", 0x1f09 },
+	{ "mtdblock10", 0x1f0a },
+	{ "mtdblock11", 0x1f0b },
+	{ "mtdblock12", 0x1f0c },
+	{ "mtdblock13", 0x1f0d },
+	{ "mtdblock14", 0x1f0e },
+	{ "mtdblock15", 0x1f0f },
+#endif
 	{ NULL, 0 }
 };