From: Randy Dunlap <rdunlap@infradead.org>
Date: Sun, 22 May 2022 20:40:27 +0000 (-0700)
Subject: zram: fix Kconfig dependency warning
X-Git-Tag: v6.1-rc5~1253^2~14
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=6140ae41effe0fff80ff3d6f1bfdff64aa06e9b4;p=platform%2Fkernel%2Flinux-starfive.git

zram: fix Kconfig dependency warning

ZSMALLOC depends on MMU so ZRAM should also depend on MMU since 'select'
does not follow any dependency chains.

Fixes this Kconfig warning:

WARNING: unmet direct dependencies detected for ZSMALLOC
  Depends on [n]: MMU [=n]
  Selected by [y]:
  - ZRAM [=y] && BLK_DEV [=y] && BLOCK [=y] && SYSFS [=y] && (CRYPTO_LZO [=y] || CRYPTO_ZSTD [=m] || CRYPTO_LZ4 [=m] || CRYPTO_LZ4HC [=n] || CRYPTO_842 [=n])

Link: https://lkml.kernel.org/r/20220522204027.22964-1-rdunlap@infradead.org
Fixes: b3fbd58fcbb10 ("mm: Kconfig: simplify zswap configuration")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Nitin Gupta <ngupta@vflare.org>
Cc: Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

diff --git a/drivers/block/zram/Kconfig b/drivers/block/zram/Kconfig
index e4163d4..d4100b0c 100644
--- a/drivers/block/zram/Kconfig
+++ b/drivers/block/zram/Kconfig
@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0
 config ZRAM
 	tristate "Compressed RAM block device support"
-	depends on BLOCK && SYSFS
+	depends on BLOCK && SYSFS && MMU
 	depends on CRYPTO_LZO || CRYPTO_ZSTD || CRYPTO_LZ4 || CRYPTO_LZ4HC || CRYPTO_842
 	select ZSMALLOC
 	help