mcp251x_read_reg
return mcp251x_read_reg(spi, CANSTAT) & CANCTRL_REQOP_MASK;
val = mcp251x_read_reg(priv->spi, reg);
val = mcp251x_read_reg(priv->spi, TXRTSCTRL);
val = mcp251x_read_reg(priv->spi, BFPCTRL);
buf[i] = mcp251x_read_reg(spi, RXBCTRL(buf_idx) + i);
buf[i] = mcp251x_read_reg(spi, RXBCTRL(buf_idx) + i);
mcp251x_read_reg(spi, CNF1),
mcp251x_read_reg(spi, CNF2),
mcp251x_read_reg(spi, CNF3));
ctrl = mcp251x_read_reg(spi, CANCTRL);