diff options
| -rw-r--r-- | drivers/infiniband/hw/hns/hns_roce_debugfs.c | 20 | ||||
| -rw-r--r-- | drivers/infiniband/hw/hns/hns_roce_debugfs.h | 1 |
2 files changed, 21 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/hns/hns_roce_debugfs.c b/drivers/infiniband/hw/hns/hns_roce_debugfs.c index db32c5897640..724d5ad90bfe 100644 --- a/drivers/infiniband/hw/hns/hns_roce_debugfs.c +++ b/drivers/infiniband/hw/hns/hns_roce_debugfs.c @@ -18,11 +18,31 @@ static int hns_debugfs_seqfile_open(struct inode *inode, struct file *f) return single_open(f, seqfile->read, seqfile->data); } +static ssize_t hns_debugfs_seqfile_write(struct file *file, + const char __user *buffer, + size_t count, loff_t *ppos) +{ + struct hns_debugfs_seqfile *seqfile = file_inode(file)->i_private; + char buf[16] = {}; + + if (!seqfile->write) + return -EOPNOTSUPP; + + if (count >= sizeof(buf)) + return -EINVAL; + + if (copy_from_user(buf, buffer, count)) + return -EFAULT; + + return seqfile->write(buf, count, seqfile->data); +} + static const struct file_operations hns_debugfs_seqfile_fops = { .owner = THIS_MODULE, .open = hns_debugfs_seqfile_open, .release = single_release, .read = seq_read, + .write = hns_debugfs_seqfile_write, .llseek = seq_lseek }; diff --git a/drivers/infiniband/hw/hns/hns_roce_debugfs.h b/drivers/infiniband/hw/hns/hns_roce_debugfs.h index 98e87bd3161e..4e77dea0fbf6 100644 --- a/drivers/infiniband/hw/hns/hns_roce_debugfs.h +++ b/drivers/infiniband/hw/hns/hns_roce_debugfs.h @@ -9,6 +9,7 @@ /* debugfs seqfile */ struct hns_debugfs_seqfile { int (*read)(struct seq_file *seq, void *data); + ssize_t (*write)(char *buf, size_t count, void *data); void *data; }; |