linux-kernel - [PATCH] SCSI: bnx2fc: fix Kconfig warning & CNIC build errors

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Date:   Sat, 13 Feb 2021 11:24:28 -0800
From:   Randy Dunlap <rdunlap@...radead.org>
To:     linux-kernel@...r.kernel.org
Cc:     Randy Dunlap <rdunlap@...radead.org>,
        kernel test robot <lkp@...el.com>,
        Saurav Kashyap <skashyap@...vell.com>,
        Javed Hasan <jhasan@...vell.com>,
        GR-QLogic-Storage-Upstream@...vell.com,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        linux-scsi@...r.kernel.org
Subject: [PATCH] SCSI: bnx2fc: fix Kconfig warning & CNIC build errors

CNIC depends on MMU, but since 'select' does not follow any
dependency chains, SCSI_BNX2X_FCOE also needs to depend on MMU,
so that erroneous configs are not generated, which cause build
errors in cnic.

WARNING: unmet direct dependencies detected for CNIC
  Depends on [n]: NETDEVICES [=y] && ETHERNET [=y] && NET_VENDOR_BROADCOM [=y] && PCI [=y] && (IPV6 [=n] || IPV6 [=n]=n) && MMU [=n]
  Selected by [y]:
  - SCSI_BNX2X_FCOE [=y] && SCSI_LOWLEVEL [=y] && SCSI [=y] && PCI [=y] && (IPV6 [=n] || IPV6 [=n]=n) && LIBFC [=y] && LIBFCOE [=y]


riscv64-linux-ld: drivers/net/ethernet/broadcom/cnic.o: in function `.L154':
cnic.c:(.text+0x1094): undefined reference to `uio_event_notify'
riscv64-linux-ld: cnic.c:(.text+0x10bc): undefined reference to `uio_event_notify'
riscv64-linux-ld: drivers/net/ethernet/broadcom/cnic.o: in function `.L1442':
cnic.c:(.text+0x96a8): undefined reference to `__uio_register_device'
riscv64-linux-ld: drivers/net/ethernet/broadcom/cnic.o: in function `.L0 ':
cnic.c:(.text.unlikely+0x68): undefined reference to `uio_unregister_device'

Fixes: 853e2bd2103a ("[SCSI] bnx2fc: Broadcom FCoE offload driver")
Reported-by: kernel test robot <lkp@...el.com>
Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
Cc: Saurav Kashyap <skashyap@...vell.com>
Cc: Javed Hasan <jhasan@...vell.com>
Cc: GR-QLogic-Storage-Upstream@...vell.com
Cc: "James E.J. Bottomley" <jejb@...ux.ibm.com>
Cc: "Martin K. Petersen" <martin.petersen@...cle.com>
Cc: linux-scsi@...r.kernel.org
---
 drivers/scsi/bnx2fc/Kconfig |    1 +
 1 file changed, 1 insertion(+)

--- linux-next-20210212.orig/drivers/scsi/bnx2fc/Kconfig
+++ linux-next-20210212/drivers/scsi/bnx2fc/Kconfig
@@ -5,6 +5,7 @@ config SCSI_BNX2X_FCOE
 	depends on (IPV6 || IPV6=n)
 	depends on LIBFC
 	depends on LIBFCOE
+	depends on MMU
 	select NETDEVICES
 	select ETHERNET
 	select NET_VENDOR_BROADCOM