linux-kernel - [PATCH] zram: ZRAM_DEF_COMP should depend on ZRAM

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Message-Id: <64e05bad68a9bd5cc322efd114a04d25de525940.1730807319.git.geert@linux-m68k.org>
Date: Tue,  5 Nov 2024 12:50:35 +0100
From: Geert Uytterhoeven <geert@...ux-m68k.org>
To: Minchan Kim <minchan@...nel.org>,
	Sergey Senozhatsky <senozhatsky@...omium.org>,
	Jens Axboe <axboe@...nel.dk>,
	Andrew Morton <akpm@...ux-foundation.org>
Cc: linux-block@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Geert Uytterhoeven <geert@...ux-m68k.org>
Subject: [PATCH] zram: ZRAM_DEF_COMP should depend on ZRAM

When Compressed RAM block device support is disabled, the
CONFIG_ZRAM_DEF_COMP symbol still ends up in the generated config file:

    CONFIG_ZRAM_DEF_COMP="unset-value"

While this causes no real harm, avoid polluting the config file by
adding a dependency on ZRAM.

Fixes: 917a59e81c342f47 ("zram: introduce custom comp backends API")
Signed-off-by: Geert Uytterhoeven <geert@...ux-m68k.org>
---
 drivers/block/zram/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/block/zram/Kconfig b/drivers/block/zram/Kconfig
index 6aea609b795c2f36..402b7b1758632807 100644
--- a/drivers/block/zram/Kconfig
+++ b/drivers/block/zram/Kconfig
@@ -94,6 +94,7 @@ endchoice
 
 config ZRAM_DEF_COMP
 	string
+	depends on ZRAM
 	default "lzo-rle" if ZRAM_DEF_COMP_LZORLE
 	default "lzo" if ZRAM_DEF_COMP_LZO
 	default "lz4" if ZRAM_DEF_COMP_LZ4
-- 
2.34.1