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Message-Id: <1195507983.29782.4.camel@utx.utx.cz>
Date:	Mon, 19 Nov 2007 22:33:02 +0100
From:	Stanislav Brabec <utx@...guin.cz>
To:	kernel list <linux-kernel@...r.kernel.org>
Cc:	linux-mtd@...ts.infradead.org, Pavel Machek <pavel@....cz>
Subject: [PATCH] fix CONFIG_MTD_SHARP_SL if CONFIG_MTD=m (try2)

Sharp Zaurus SL-C3200 with CONFIG_MTD=m and CONFIG_MTD_SHARP_SL=y (as it
is bool) lost support for the ROM flash. With CONFIG_MTD=y it has no
problems.

It is caused by losing of compiled code of
drivers/mtd/maps/sharpsl-flash.o.
It was linked to drivers/mtd/maps/built-in.o and drivers/mtd/built-in.o,
but lost and not linked to drivers/built-in.o (because CONFIG_MTD!=y).

Patch below fixes this problem by creating sharpsl-flash.ko (and the
code works correctly as a module).

This is second try (first sent Nov 10 to linux-mtd@...ts.infradead.org).

Signed-off-by: Stanislav Brabec <utx@...guin.cz>

Index: linux-2.6.23/drivers/mtd/maps/Kconfig
===================================================================
--- linux-2.6.23/drivers/mtd/maps/Kconfig
+++ linux-2.6.23/drivers/mtd/maps/Kconfig
@@ -600,7 +600,7 @@
 	default "4"
 
 config MTD_SHARP_SL
-	bool "ROM mapped on Sharp SL Series"
+	tristate "ROM mapped on Sharp SL Series"
 	depends on ARCH_PXA
 	help
 	  This enables access to the flash chip on the Sharp SL Series of PDAs.


Command to ensure, that CONFIG_MTD_SHARP_SL is the only problematic part
of MTD.
for i in $(find -name Makefile | xargs grep CONFIG_MTD_ | sed 's/.*obj-\$(\([^)]*\).*/\1/') ; do grep -A1 -w "config ${i#CONFIG_}" $(find -name Kconfig) ; done | grep -B1 bool


________________________________________________________________________
Stanislav Brabec
http://www.penguin.cz/~utx

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