From: Arnd Bergmann <arnd@arndb.de>
Date: Fri, 10 Nov 2017 14:57:21 +0000 (+0100)
Subject: cramfs: fix MTD dependency
X-Git-Tag: v4.15-rc4~6
X-Git-Url: https://repo.jachan.dev/linux.git/commitdiff_plain/b9f5fb1800d8

cramfs: fix MTD dependency

With CONFIG_MTD=m and CONFIG_CRAMFS=y, we now get a link failure:

  fs/cramfs/inode.o: In function `cramfs_mount': inode.c:(.text+0x220): undefined reference to `mount_mtd'
  fs/cramfs/inode.o: In function `cramfs_mtd_fill_super':
  inode.c:(.text+0x6d8): undefined reference to `mtd_point'
  inode.c:(.text+0xae4): undefined reference to `mtd_unpoint'

This adds a more specific Kconfig dependency to avoid the broken
configuration.

Alternatively we could make CRAMFS itself depend on "MTD || !MTD" with a
similar result.

Fixes: 99c18ce580c6 ("cramfs: direct memory access support")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/fs/cramfs/Kconfig b/fs/cramfs/Kconfig
index f937082f3244..58e2fe40b2a0 100644
--- a/fs/cramfs/Kconfig
+++ b/fs/cramfs/Kconfig
@@ -34,6 +34,7 @@ config CRAMFS_BLOCKDEV
 config CRAMFS_MTD
 	bool "Support CramFs image directly mapped in physical memory"
 	depends on CRAMFS && MTD
+	depends on CRAMFS=m || MTD=y
 	default y if !CRAMFS_BLOCKDEV
 	help
 	  This option allows the CramFs driver to load data directly from