linux-kernel - [PATCH 01/20] ata: ahci_dm816: Ignore -Woverride-init

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Message-Id: <20210128180239.548512-2-lee.jones@linaro.org>
Date:   Thu, 28 Jan 2021 18:02:20 +0000
From:   Lee Jones <lee.jones@...aro.org>
To:     lee.jones@...aro.org
Cc:     linux-kernel@...r.kernel.org, Jens Axboe <axboe@...nel.dk>,
        linux-ide@...r.kernel.org
Subject: [PATCH 01/20] ata: ahci_dm816: Ignore -Woverride-init

Some ATA drivers use the SCSI host template, a series of interwoven
macros, to aid with initialisation.  Some of these macros conflict,
resulting in the over-writing of previously set values.

This is known behaviour and can be safely ignored.

Fixes the following W=1 kernel build warning(s):

 In file included from drivers/ata/ahci_dm816.c:16:
 drivers/ata/ahci.h:387:16: warning: initialized field overwritten [-Woverride-init]
 drivers/ata/ahci_dm816.c:138:2: note: in expansion of macro ‘AHCI_SHT’
 drivers/ata/ahci.h:387:16: note: (near initialization for ‘ahci_dm816_platform_sht.can_queue’)
 drivers/ata/ahci_dm816.c:138:2: note: in expansion of macro ‘AHCI_SHT’
 drivers/ata/ahci.h:391:17: warning: initialized field overwritten [-Woverride-init]
 drivers/ata/ahci_dm816.c:138:2: note: in expansion of macro ‘AHCI_SHT’
 drivers/ata/ahci.h:391:17: note: (near initialization for ‘ahci_dm816_platform_sht.sdev_attrs’)
 drivers/ata/ahci_dm816.c:138:2: note: in expansion of macro ‘AHCI_SHT’

Cc: Jens Axboe <axboe@...nel.dk>
Cc: linux-ide@...r.kernel.org
Signed-off-by: Lee Jones <lee.jones@...aro.org>
---
 drivers/ata/Makefile | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/ata/Makefile b/drivers/ata/Makefile
index b8aebfb14e825..d24bf4d2b08d6 100644
--- a/drivers/ata/Makefile
+++ b/drivers/ata/Makefile
@@ -1,5 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0
 
+CFLAGS_ahci_dm816.o		= $(call cc-disable-warning, override-init)
+
 obj-$(CONFIG_ATA)		+= libata.o
 
 # non-SFF interface
-- 
2.25.1