RDMA/hfi1: use sysfs_emit() to instead of scnprintf()

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@zte.com.cn>
Link: https://lore.kernel.org/r/202212071632188074249@zte.com.cn
Signed-off-by: Leon Romanovsky <leon@kernel.org>

diff --git a/drivers/infiniband/hw/hfi1/driver.c b/drivers/infiniband/hw/hfi1/driver.c
index 8e71bef9d982652fb5018ef877ddfe048eab426e..bcc6bc0540f0330caed530b3f47a5b836e4387c7 100644 (file)
--- 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)