linux-kernel - [PATCH v2] scsi: pmcraid: convert sysfs snprintf to sysfs

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Message-Id: <20220428154138.257250-1-zhangxuezhi1@coolpad.com>
Date:   Thu, 28 Apr 2022 15:41:37 +0000
From:   Xuezhi Zhang <zhangxuezhi1@...lpad.com>
To:     jejb@...ux.ibm.com, martin.petersen@...cle.com
Cc:     linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
        Xuezhi Zhang <zhangxuezhi1@...lpad.com>
Subject: [PATCH v2] scsi: pmcraid: convert sysfs snprintf to sysfs_emit

Fix the following coccicheck warnings:
drivers/scsi/pmcraid.c:3591:8-16:
WARNING: use scnprintf or sprintf
drivers/scsi/pmcraid.c:3557:8-16:
WARNING: use scnprintf or sprintf
drivers/scsi/pmcraid.c:3496:8-16:
WARNING: use scnprintf or sprintf

Signed-off-by: Xuezhi Zhang <zhangxuezhi1@...lpad.com>
---
v2: fix the sysfs_emt error.
---
 arch/arm64/configs/defconfig | 4 ++++
 drivers/scsi/pmcraid.c       | 8 +++-----
 2 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
index 476c5a9488d0..8688ed761cfd 100644
--- a/arch/arm64/configs/defconfig
+++ b/arch/arm64/configs/defconfig
@@ -1295,3 +1295,7 @@ CONFIG_DEBUG_KERNEL=y
 # CONFIG_DEBUG_PREEMPT is not set
 # CONFIG_FTRACE is not set
 CONFIG_MEMTEST=y
+CONFIG_UEVENT_HELPER=y
+CONFIG_UEVENT_HELPER_PATH="/sbin/mdev"
+CONFIG_INITRAMFS_SOURCE="_install_arm64"
+
diff --git a/drivers/scsi/pmcraid.c b/drivers/scsi/pmcraid.c
index 3d5cd337a2a6..57a6fe8aaf70 100644
--- a/drivers/scsi/pmcraid.c
+++ b/drivers/scsi/pmcraid.c
@@ -3493,7 +3493,7 @@ static ssize_t pmcraid_show_log_level(
 	struct Scsi_Host *shost = class_to_shost(dev);
 	struct pmcraid_instance *pinstance =
 		(struct pmcraid_instance *)shost->hostdata;
-	return snprintf(buf, PAGE_SIZE, "%d\n", pinstance->current_log_level);
+	return sysfs_emit(buf, "%d\n", pinstance->current_log_level);
 }
 
 /**
@@ -3554,8 +3554,7 @@ static ssize_t pmcraid_show_drv_version(
 	char *buf
 )
 {
-	return snprintf(buf, PAGE_SIZE, "version: %s\n",
-			PMCRAID_DRIVER_VERSION);
+	return sysfs_emit(buf, "version: %s\n", PMCRAID_DRIVER_VERSION);
 }
 
 static struct device_attribute pmcraid_driver_version_attr = {
@@ -3588,8 +3587,7 @@ static ssize_t pmcraid_show_adapter_id(
 		pinstance->pdev->devfn;
 	u32 aen_group = pmcraid_event_family.id;
 
-	return snprintf(buf, PAGE_SIZE,
-			"adapter id: %d\nminor: %d\naen group: %d\n",
+	return sysfs_emit(buf, "adapter id: %d\nminor: %d\naen group: %d\n",
 			adapter_id, MINOR(pinstance->cdev.dev), aen_group);
 }
 
-- 
2.25.1