linux-kernel - [PATCH] cxgb4: fix TLS dependencies again

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Date:   Sun,  3 Jan 2021 15:01:26 +0100
From:   Arnd Bergmann <arnd@...nel.org>
To:     Karen Xie <kxie@...lsio.com>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Tom Seewald <tseewald@...il.com>
Cc:     Arnd Bergmann <arnd@...db.de>,
        Randy Dunlap <rdunlap@...radead.org>,
        Masahiro Yamada <masahiroy@...nel.org>,
        linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] cxgb4: fix TLS dependencies again

From: Arnd Bergmann <arnd@...db.de>

A previous patch tried to avoid a build failure, but missed one case
that Kconfig warns about:

WARNING: unmet direct dependencies detected for CHELSIO_T4
  Depends on [m]: NETDEVICES [=y] && ETHERNET [=y] && NET_VENDOR_CHELSIO [=y] && PCI [=y] && (IPV6 [=y] || IPV6 [=y]=n) && (TLS [=m] || TLS [=m]=n)
  Selected by [y]:
  - SCSI_CXGB4_ISCSI [=y] && SCSI_LOWLEVEL [=y] && SCSI [=y] && PCI [=y] && INET [=y] && (IPV6 [=y] || IPV6 [=y]=n) && ETHERNET [=y]
x86_64-linux-ld: drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.o: in function `cxgb_select_queue':
cxgb4_main.c:(.text+0xf5df): undefined reference to `tls_validate_xmit_skb'

When any of the dependencies of CHELSIO_T4 are not met, then
SCSI_CXGB4_ISCSI must not 'select' it either.

Fix it by mirroring the network driver dependencies on the iscsi
driver. A more invasive but also more reliable alternative would
be to use 'depends on CHELSIO_T4' instead.

Fixes: 659fbdcf2f14 ("cxgb4: Fix build failure when CONFIG_TLS=m")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 drivers/scsi/cxgbi/cxgb4i/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/scsi/cxgbi/cxgb4i/Kconfig b/drivers/scsi/cxgbi/cxgb4i/Kconfig
index 8b0deece9758..2af88a55fbca 100644
--- a/drivers/scsi/cxgbi/cxgb4i/Kconfig
+++ b/drivers/scsi/cxgbi/cxgb4i/Kconfig
@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0-only
 config SCSI_CXGB4_ISCSI
 	tristate "Chelsio T4 iSCSI support"
-	depends on PCI && INET && (IPV6 || IPV6=n)
+	depends on PCI && INET && (IPV6 || IPV6=n) && (TLS || TLS=n)
 	depends on THERMAL || !THERMAL
 	depends on ETHERNET
 	depends on TLS || TLS=n
-- 
2.29.2