TPM_BUFSIZE
memset(priv->data_buffer, 0, TPM_BUFSIZE);
if (size > TPM_BUFSIZE)
u8 data_buffer[TPM_BUFSIZE];
if (bufsiz > TPM_BUFSIZE)
bufsiz = TPM_BUFSIZE;
if (len > TPM_BUFSIZE - 1)
phy->io_buf = devm_kzalloc(&dev->dev, TPM_BUFSIZE, GFP_KERNEL);
u8 buffer[TPM_BUFSIZE]; /* request/response buffer */