linux-kernel - [PATCH] RDMA/hfi1: use sysfs_emit() to instead of scnprintf()

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Message-ID: <202212071632188074249@zte.com.cn>
Date:   Wed, 7 Dec 2022 16:32:18 +0800 (CST)
From:   <ye.xingchen@....com.cn>
To:     <leon@...nel.org>
Cc:     <dennis.dalessandro@...nelisnetworks.com>, <jgg@...pe.ca>,
        <linux-rdma@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH] RDMA/hfi1: use sysfs_emit() to instead of scnprintf()

From: ye xingchen <ye.xingchen@....com.cn>

Follow the advice of the Documentation/filesystems/sysfs.rst and show()
should only use sysfs_emit() or sysfs_emit_at() when formatting the
value to be returned to user space.

Signed-off-by: ye xingchen <ye.xingchen@....com.cn>
---
 drivers/infiniband/hw/hfi1/driver.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/infiniband/hw/hfi1/driver.c b/drivers/infiniband/hw/hfi1/driver.c
index 8e71bef9d982..bcc6bc0540f0 100644
--- a/drivers/infiniband/hw/hfi1/driver.c
+++ b/drivers/infiniband/hw/hfi1/driver.c
@@ -112,7 +112,7 @@ static int hfi1_caps_get(char *buffer, const struct kernel_param *kp)
 	cap_mask &= ~HFI1_CAP_LOCKED_SMASK;
 	cap_mask |= ((cap_mask & HFI1_CAP_K2U) << HFI1_CAP_USER_SHIFT);

-	return scnprintf(buffer, PAGE_SIZE, "0x%lx", cap_mask);
+	return sysfs_emit(buffer, "0x%lx\n", cap_mask);
 }

 struct pci_dev *get_pci_dev(struct rvt_dev_info *rdi)
-- 
2.25.1