linux-kernel - [PATCH] staging: rtl8192e: fix kconfig dependency warning for RTLLIB_CRYPTO

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Date:   Tue, 15 Sep 2020 12:30:34 +0300
From:   Necip Fazil Yildiran <fazilyildiran@...il.com>
To:     gregkh@...uxfoundation.org
Cc:     Larry.Finger@...inger.net, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org, paul@...zz.com, jeho@...utexas.edu,
        Necip Fazil Yildiran <fazilyildiran@...il.com>
Subject: [PATCH] staging: rtl8192e: fix kconfig dependency warning for RTLLIB_CRYPTO_TKIP

When RTLLIB_CRYPTO_TKIP is enabled and CRYPTO is disabled, it results in
the following Kbuild warning:

WARNING: unmet direct dependencies detected for CRYPTO_ARC4
  Depends on [n]: CRYPTO [=n]
  Selected by [m]:
  - RTLLIB_CRYPTO_TKIP [=m] && STAGING [=y] && RTLLIB [=m]

WARNING: unmet direct dependencies detected for CRYPTO_MICHAEL_MIC
  Depends on [n]: CRYPTO [=n]
  Selected by [m]:
  - RTLLIB_CRYPTO_TKIP [=m] && STAGING [=y] && RTLLIB [=m]

The reason is that RTLLIB_CRYPTO_TKIP selects CRYPTO_ARC4 and
CRYPTO_MICHAEL_MIC without depending on or selecting CRYPTO while both
CRYPTO_ARC4 and CRYPTO_MICHAEL_MIC are subordinate to CRYPTO.

Honor the kconfig menu hierarchy to remove kconfig dependency warnings.

Fixes: e0e3daddad36 ("staging: r8192e: Fix possible error in configuration")
Signed-off-by: Necip Fazil Yildiran <fazilyildiran@...il.com>
---
 drivers/staging/rtl8192e/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/staging/rtl8192e/Kconfig b/drivers/staging/rtl8192e/Kconfig
index 1007eea6c8fc..fd237dda8be4 100644
--- a/drivers/staging/rtl8192e/Kconfig
+++ b/drivers/staging/rtl8192e/Kconfig
@@ -25,6 +25,7 @@ config RTLLIB_CRYPTO_CCMP
 config RTLLIB_CRYPTO_TKIP
 	tristate "Support for rtllib TKIP crypto"
 	depends on RTLLIB
+	select CRYPTO
 	select CRYPTO_ARC4
 	select CRYPTO_MICHAEL_MIC
 	default y
-- 
2.25.1