linux-kernel - [PATCH v3 2/6] scsi: use const

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Date:   Wed, 18 Apr 2018 01:35:07 +0200
From:   Martin Wilck <mwilck@...e.com>
To:     "Martin K. Petersen" <martin.petersen@...cle.com>
Cc:     linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
        Hannes Reinecke <hare@...e.de>,
        James Bottomley <jejb@...ux.vnet.ibm.com>,
        Xose Vazquez Perez <xose.vazquez@...il.com>,
        Bart Van Assche <Bart.VanAssche@...disk.com>,
        Hannes Reinecke <hare@...e.com>,
        Johannes Thumshirn <jthumshirn@...e.de>,
        Bart Van Assche <bart.vanassche@....com>,
        Christoph Hellwig <hch@....de>,
        Johannes Thumshirn <jthumshirn@...e.com>,
        Jens Axboe <axboe@...com>,
        James Bottomley <James.Bottomley@...senPartnership.com>,
        Omar Sandoval <osandov@...com>,
        Bart Van Assche <bart.vanassche@...disk.com>,
        Ming Lei <ming.lei@...hat.com>
Subject: [PATCH v3 2/6] scsi: use const_ilog2 for array indices

Use the just introduced const_ilog2() macro to avoid sparse
errors.

Signed-off-by: Martin Wilck <mwilck@...e.com>
---
 drivers/scsi/scsi_debugfs.c | 2 +-
 drivers/scsi/scsi_sysfs.c   | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/scsi/scsi_debugfs.c b/drivers/scsi/scsi_debugfs.c
index b784002..c5a8756 100644
--- a/drivers/scsi/scsi_debugfs.c
+++ b/drivers/scsi/scsi_debugfs.c
@@ -4,7 +4,7 @@
 #include <scsi/scsi_dbg.h>
 #include "scsi_debugfs.h"
 
-#define SCSI_CMD_FLAG_NAME(name) [ilog2(SCMD_##name)] = #name
+#define SCSI_CMD_FLAG_NAME(name)[const_ilog2(SCMD_##name)] = #name
 static const char *const scsi_cmd_flags[] = {
 	SCSI_CMD_FLAG_NAME(TAGGED),
 	SCSI_CMD_FLAG_NAME(UNCHECKED_ISA_DMA),
diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c
index e56a4ac..feacd7a 100644
--- a/drivers/scsi/scsi_sysfs.c
+++ b/drivers/scsi/scsi_sysfs.c
@@ -968,7 +968,7 @@ sdev_show_wwid(struct device *dev, struct device_attribute *attr,
 static DEVICE_ATTR(wwid, S_IRUGO, sdev_show_wwid, NULL);
 
 #define BLIST_FLAG_NAME(name)					\
-	[ilog2((__force unsigned int)BLIST_##name)] = #name
+	[const_ilog2((__force unsigned int)BLIST_##name)] = #name
 static const char *const sdev_bflags_name[] = {
 #include "scsi_devinfo_tbl.c"
 };
-- 
2.16.1