diff options
| -rw-r--r-- | drivers/crypto/intel/qat/qat_common/adf_heartbeat_dbgfs.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/drivers/crypto/intel/qat/qat_common/adf_heartbeat_dbgfs.c b/drivers/crypto/intel/qat/qat_common/adf_heartbeat_dbgfs.c index 5cd6c2d6f90a..cccdff24b48d 100644 --- a/drivers/crypto/intel/qat/qat_common/adf_heartbeat_dbgfs.c +++ b/drivers/crypto/intel/qat/qat_common/adf_heartbeat_dbgfs.c @@ -160,16 +160,17 @@ static ssize_t adf_hb_error_inject_write(struct file *file, size_t count, loff_t *ppos) { struct adf_accel_dev *accel_dev = file->private_data; - size_t written_chars; char buf[3]; int ret; /* last byte left as string termination */ - if (count != 2) + if (*ppos != 0 || count != 2) return -EINVAL; - written_chars = simple_write_to_buffer(buf, sizeof(buf) - 1, - ppos, user_buf, count); + if (copy_from_user(buf, user_buf, count)) + return -EFAULT; + buf[count] = '\0'; + if (buf[0] != '1') return -EINVAL; @@ -183,7 +184,7 @@ static ssize_t adf_hb_error_inject_write(struct file *file, dev_info(&GET_DEV(accel_dev), "Heartbeat error injection enabled\n"); - return written_chars; + return count; } static const struct file_operations adf_hb_error_inject_fops = { |